Database Develop

How to use USB Host without an HD Dock (Updated 11/7/12)

In light of the EOL status of the Bionic, this method may no longer be the most cost effective, as the HD dock is now $24 on Amazon, before shipping. Still, this is a cheap way to use usb devices away from a tv or monitor. Please keep all of this in mind before considering this option.
Many Bionic users have wondered if they could somehow use USB host without having to buy an expensive dock. Well, I have just finished testing a method that works. Now please note it's not the sleekest or most portable of methods. Still, it works.
Test Build - http://img.photobucket.com/albums/v148/silversonic1/GEDC0056.jpg
You may be wondering why I am using a Y USB cable. In my testing, I have come to the conclusion that Motorola intentionally crippled the phone's OTG functions. It appears that the host mode only works when TWO priorities are met. First, the phone MUST be receiving power. Second, a hub MUST be used. If either of these is not met, the OTG mode stays offline.
Because this method requires extra power, you have to have a powered USB port nearby. Some USB power packs may put out enough power, but it's still uncertain. However, since my Scosche solar battery pack worked both for the Bionic alone and for this build, it could be possible that anything that works for the Bionic will work for the build as well. Also, I have no way of testing this in a car at the moment.
Action Shot - http://img.photobucket.com/albums/v148/silversonic1/GEDC0052-1.jpg
In the action shot, I am testing a 4GB SanDisk Cruzer. I did run other tests and usb keyboards and mice will work. I used a wireless Targus mouse, as well as a wireless HP mouse and keyboard. They all worked. Sadly, that is the extent of my current HID tech at the moment.
One thing I have observed in my tests is that you should have all of your rig connected before hooking it up to your phone. That includes external power. Not doing so could cause your hub to be recognized much more slowly, or not at all.
I would also like to note that although many hubs allow for AC/DC power adapters to be used, most hubs won't send power through the host port. That is why the Y cable is necessary. But don't worry! I believe that if you attach the power connector of the Y cable to one of the ports of your powered hub, this should give you all the power you need for the phone to charge and activate the OTG mode.
Here's what you need.
USB hub with mini USB port for connecting to host device($5-$20)
Y USB cable($4)
USB Type A Female-USB Micro Male adapter($1-2)
Build subtotal-$10-$26, before tax or shipping. Depending on what you already own, this could still be cheaper than an HD Dock.
All hubs with a mini usb host port should work for this build. But if there are any that don't, please give me the make and model info so I can add them to the list below.
Hubs Confirmed Unusable
None so far
Thank you for looking this through. I hope it helps.
Update 11/7/12- Still works on the 246 OTA.

silversonic1 said:
Many Bionic users have wondered if they could somehow use USB host without having to buy an expensive dock. Well, I have just finished testing a method that works.
Now please note it's not the sleakest or most portable of methods. At this writing, I am still waiting on USB OTG connectors that are known to work for other devices. However, I didn't want to hold back a successful result while waiting on an unknown.
Test Build - http://img.photobucket.com/albums/v148/silversonic1/GEDC0056.jpg
You may be wondering why I am using a Y USB cable. Put simply, it gives the power needed to charge the phone and to power the hub. EXTERNAL POWER IS NECESSARY. Because this method requires extra power, you have to have a powered USB port nearby. Some USB power packs may put out enough power, but it's still uncertain. However, since my Scosche solar battery pack worked both for the Bionic alone and for this build, it could be possible that other packs that work for the Bionic will work as well.
Action Shot - http://img.photobucket.com/albums/v148/silversonic1/GEDC0052-1.jpg
In the action shot, I am testing a 4GB SanDisk Cruzer. I did run other tests and usb keyboards and mice will work. I used a wireless Targus mouse, as well as a wireless HP mouse and keyboard. They all worked. Sadly, that is the extent of my current HID tech at the moment.
One thing I have observed in my tests is that you should have all of your rig connected before hooking up your phone. That includes external power. Not doing so could cause your hub to be recognized much more slowly, or not at all.
Here's a list of the parts used. (Will update specifics if requested.)
USB hub with USB-mini interface for host device($5-$20)
Y USB cable($4)
USB Type A Female-USB Micro Male adapter($1-2)
Build subtotal-$10-$26, before tax or shipping. That's a lot cheaper than $55-$100 on an HD dock.
Thank you for looking this through. I hope it helps.
(Also, if this thread is in the wrong place, I'm sorry. I didn't think this was necessarily an accessory thing, but rather a way to utilize a built-in feature.)
Click to expand...
Click to collapse
thats freaking awesome dude

iNsAnEmOd said:
thats freaking awesome dude
Click to expand...
Click to collapse
I'm glad you see it that way. It's my hope that this works for any Motorola device that is built with a lapdock mode.

I'm hoping someone makes an app that allows me to use my tablet for a keyboard and mousepad for the webtop. I'm not a fan of hanging out within 6 feet of my tv when using the webtop.
Sent from the Evil Empire

smokedkill said:
I'm hoping someone makes an app that allows me to use my tablet for a keyboard and mousepad for the webtop. I'm not a fan of hanging out within 6 feet of my tv when using the webtop.
Sent from the Evil Empire
Click to expand...
Click to collapse
Well, this rig works with wireless keyboards and mice. True, not the same as a tablet, but it'll get you further from the tv.
As for what you are suggesting, I thought I had heard some people were working on something similar. I'll PM you if I find it.
xda premium is insane! ... In a good way.

What Components
What is the amperage output of the power source your using? Also what is the model number of the usb hub your using? i tried a usb hub i had but it didnt work. Also did you have to bridge the pin 4 to ground on the micro plug in essence creating a otg cable?

codenamefly21 said:
What is the amperage output of the power source your using? Also what is the model number of the usb hub your using? i tried a usb hub i had but it didnt work. Also did you have to bridge the pin 4 to ground on the micro plug in essence creating a otg cable?
Click to expand...
Click to collapse
Ok. One thing a a time.
Power.
In the action shot, I used my laptop. However, the charger that comes with the phone works as well. That's 5.1volts, 850mA
Model of hub.
I have tested 2 different hubs at this point. At the moment, the one from the photos is unavailable, so I can't get the model info from it now. However, the other I tested is a Manhattan 4-port USB hub, model 160612.
Connector.
I made no modifications to the connectors that I have used. They were, however, already being marketed as OTG adapters. I ordered the one from the pictures on dealextreme. I recently bought newer ones from ebay that are angled up the side of the phone. The new ones work as well.
I suggest that you make sure all of your connectors are secure. A proper connection will have the phone charging while the hub receives power. If it fails to connect to a device after 1 minute when you make your first connection, disconnect the phone and than reconnect.
If you still have trouble after, please post what you're using along with a pic of your setup. With any luck, we'll get it all sorted out.

Working portable prototype
I have a working portable prototype using a 9v battery as the power source. I think the problem with the initial test is that i wasnt waiting long enough for the phone to detect the usb hub and the memory card. Now i have it working fully. I have tried 2 different usb hubs and both worked. 1 was the micro innovations usb204n it worked but was a bit bulky. The second was one i bought from a store local to my home called biglots its an E Source brand 4port usb 2.0 $7. Its nice and slim with an extra ac port on the side. The setup ill be creating is i will wire a 9v battery to a 7805 voltage regulator (with an inline power switch of course) soldered directly to the pins of the ac port. Then i will desolder the usb plug and solder in my homemade otg cable. So all you will have to do is plug it directly to the phone plug in the usb drive and then flip the power switch. i dont wanna post pictures of the ugly prototype so ill have pictures of the final product this weekend. I will say that i found out a usb hub is not needed to use a mouse but the otg cable is. Thank you silversonic for your help

codenamefly21 said:
I have a working portable prototype using a 9v battery as the power source. I think the problem with the initial test is that i wasnt waiting long enough for the phone to detect the usb hub and the memory card. Now i have it working fully. I have tried 2 different usb hubs and both worked. 1 was the micro innovations usb204n it worked but was a bit bulky. The second was one i bought from a store local to my home called biglots its an E Source brand 4port usb 2.0 $7. Its nice and slim with an extra ac port on the side. The setup ill be creating is i will wire a 9v battery to a 7805 voltage regulator (with an inline power switch of course) soldered directly to the pins of the ac port. Then i will desolder the usb plug and solder in my homemade otg cable. So all you will have to do is plug it directly to the phone plug in the usb drive and then flip the power switch. i dont wanna post pictures of the ugly prototype so ill have pictures of the final product this weekend. I will say that i found out a usb hub is not needed to use a mouse but the otg cable is. Thank you silversonic for your help
Click to expand...
Click to collapse
I am certainly looking forward to seeing what all you have come up with. Just take your time. After all, I'm sure there are those who are willing to build a more stylish solution than I have up top.

Battery powered usb hub
Ok so i finished the battery powered usb hub that connects to any micro usb phone but it was to bulky using the 9v battery. So i came up with another design using an old cell phone battery. So it is rechargeable as soon as i add the on off switch it will be finished.
---------- Post added at 09:41 PM ---------- Previous post was at 08:44 PM ----------
The usb hub was just too bulky using the 9v battery
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Rechargeable battery powered usb hub with otg cable
Here is the finished hardware. I took pictures before i seal it all up so yall could see what all i did. The usb hub has a otg cable that plugs into your phone. It has a 950mah cell phone battery and the circuitry from an emergency charger that converts 2 aa batteries (3v) to 5v. Also on the circuitry was an led flashlight so i decided to keep it in there just in case . The only problem was that the off switch that was on the circuit wouldn't shut off the power to the hub for some reason so i put a secondary switch on the power wire to the hub. I had a problem with the charger charging the battery because it charges the battery based on voltage and the capacitors were screwing that up so i put a diode on the power going into the up-scaling circuit board but not as to break the connection with the charger to battery wires.

That is certainly the most mobile solution to USB host so far. Kudos!

problem
I was having a problem soon after I put everything together. Anytime I plugged the phone in the circuit would shut down because to much amperage was being pulled from the battery and as a safety thing lithium batteries will shut down so they wont over heat I finally realized all I had to do was put an 8ohm resistor on the power wire going from the usb hub to the phone. 8ohm only because that was what I had. I tried a 1/2ohm resistor and it worked but the less amperage being pulled from the battery the longer it lasts and the circuit doesn't get as hot.

hey man, thanks a lot for your research! i hopped on this thread and about 30 seconds later i had my wireless (unifying usb receiver) logitech keyboard and mouse working
had a male->male usb cable, usb hub, and micro usb male -> full female lying around. plugged everything in and presto!
the touchscreen monitor doesn't work though for webtop

More than likely because touch screen drivers aren't as generic as mice or keyboards. But it was a good thing to try out. Mind sharing the make and model info? It will be helpful to others to know what to expect.

Mine works, cheapo Micro Center hub
I actually spoke with the OP this weekend, and before I read his reply, I was up and running. Sadly, I bought a Manhattan hub based on his findings, which was a bit pricey given the current price of normal USB hubs. I paid $15 on ebay for one, and when I got it, it didn't work. I then bought a usb Y cable from ebay as well, and that was the culprit, that cable was necessary for any hub, regardless if it uses an AC power adapter or not.
On a good note, that means that there's a good chance cheaper (and easier to find) USB hubs may work. The one I'm currently using is Gear Head brand, was $9 at Micro Center. That hub without using the included power cable, and just using the Y usb cable bought separately and the OTG adapter on ebay got me up and running.
Hmmm...now that I look, it seems the hub I got for $9 went up to $15 anyway, but here's what I used incase you have a MC closeby and don't feel like waiting for shipping. Search for SKU 280750 on Microcenter's site. I'm new here so it won't let me post URL's.
Bad news is you'll be paying a total of around $20 for this project, the good news is that may be the maximum you'd be paying, and that's if you buy a $15 usb hub. Honestly, I'd say just look around local stores for one cheaper that has a mini USB port to connect it to the phone + external power usb port (i.e. a laptop next to the phone), and if it doesn't work, return it as long as you can box it up without it looking demolished. Best of luck to everyone, but I hope my verification shows there may be more hope since the Manhattan model is fairly hard to find at a cheap price.

silversonic1 said:
You may be wondering why I am using a Y USB cable. In my testing, I have come to the conclusion that Motorola intentionally crippled the phone's OTG functions. It appears that the host mode only works when TWO priorities are met. First, the phone MUST be receiving power. Second, a hub MUST be used. If either of these is not met, the OTG mode stays offline.
Click to expand...
Click to collapse
I'd imagine they didn't want both the phone and Lapdock trying to send power over USB simultaneously.
Thanks for the guide, it was useful

mossadacity said:
I'd imagine they didn't want both the phone and Lapdock trying to send power over USB simultaneously.
Thanks for the guide, it was useful
Click to expand...
Click to collapse
You're welcome. I have updated to the ICS leak, so I will have to test again, just to be sure that nothing has changed.

3d printed docking station
silversonic1 said:
More than likely because touch screen drivers aren't as generic as mice or keyboards. But it was a good thing to try out. Mind sharing the make and model info? It will be helpful to others to know what to expect.
Click to expand...
Click to collapse
Sorry for the delayed reply.
I buy generic cables from meritline.com, so there is no brand on them :good:
I think I'm the first person on Thingiverse to create an accessory for the droid bionic, what do you guys think of it:
That was iteration #1, to get the dimensions correct. From here, I can go anywhere. Do folks have any dock dreams they'd like to see come to fruition?

For a while now I've wanted to be able to use my waterproof camera to take pictures, and use my phone to upload them to the web without needing to fire up a computer to do a transfer from the SD card to the phone. This thread inspired me to finally take the leap to work up an OTG adapter. I went on Amazon to buy the Y-cable and the little adapters, but found something better.
This (board won't let me post a link because I'm new) is a USB hub that connects a phone to one of the four downstream ports with a built-in micro USB connector cable. I ordered one up, suspecting that I could mod it to be an OTG adapter. I was right.
To do the mod, the first step is to pry the endcap off the micro USB connector and slide the cover back. This exposes the soldered wire connections. One side of the connector has three wires.
The other side has one wire and an empty solder pad.
Solder a jumper wire from the empty pad to the black wire on the other side.
Then slide the connector cover back over the connector, and press the endcap back into place. If necessary, you can secure the end cap with a drop of super glue.
Next, open the case of the hub. Mine pulled right open with only finger pressure. Use a small screwdriver to remove the circuit board. It is not held by anything other than a light press fit.
This is the back side of the circuit board.
This is the chip that runs the USB hub.
I googled the chip number and downloaded the data sheet, just to be sure there were no gotchas. There weren't any. The only modification is swapping the regular and the micro USB cables. It goes without saying that this requires a very fine soldering iron and a steady hand. Desolder both cables and reattach the micro USB cable on the Host end of the circuit board.
This lets your phone control the hub. As was mentioned earlier in the thread, the Droid Bionic won't power the hub, so you need to hook up the other USB cable to the device side of the circuit board to provide power. Only hook up the power wires. Just cut the data wires short.
Then reinstall the circuit board into the case.
And press the cover back on.
It would be easy to wire a battery to the hub either by connecting to the USB port cable, through the 5VDC power input jack, or by removing the jack and hard wiring directly to the circuit board.
To use the adapter, I plug my SD card reader into the hub, plug the power USB connector into my wall adapter (or car adapter), and plug the micro USB cable into the phone (in that order). The phone immediately loads the card as an attached storage device.
Enjoy,
Todd F.

Does Droid 3 Support OTG?

Does Droid 3 support OTG like SGS2?

Wow no1 has replied...
The drivers and phone is capable like any other - Not officially, plugging devices into the phone will not work, nor windows wont give you full host access with out using mass storage mode.
There is a little application called Droidexplorer which works in a similar fashion to otg, but also allows access every part of the phone (root) when simply plugged in even when the phone is set to charge only mode.
Excellent app if this is what your looking for, look it up.
-smc

BUMP - Anyone?
heartaone said:
Does Droid 3 support OTG like SGS2?
Click to expand...
Click to collapse
As above... Is it available? I would so love to use a mouse/bt keyboard with my D3+HDMI...

re bump
Wrexem said:
As above... Is it available? I would so love to use a mouse/bt keyboard with my D3+HDMI...
Click to expand...
Click to collapse
+1 re bump

Wait for webtop.
Sent from my XT862 using XDA App

Err, that Ubuntu thing I mean. Sorry.
Sent from my XT862 using XDA App

maybe trick
Maybe any trick USB OTG for droid 3 use application like q5 memory manager?

somone get it working=?

OTG works perfectly with a modded lapdock, with the keyboard, touchpad and 2 USB ports all interfacing via USB. The stock ROM even supports mounting and unmounting flash drives as shown by a screenshot in this post:
http://forum.xda-developers.com/showpost.php?p=25111643&postcount=29
But I could never get it working with an OTG adapter. That same OTG adapter works fine on my Touchpad so thats not the issue. Its possible that the Droid 3 needs +5v Vcc to be connected, because when its on the lapdock its charging as well as providing OTG. This is different from my Touchpad which refuses to charge when in OTG and doesn't even need Vcc connected.

ok, thanks
but i only wanne use that otg adapter with flashdrives ;/

Hi,
I use ME863 that could support OTG but Just need through an Usb hub
that has external power supply.
I think Droid 3 should be ok, too.
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Sent from my ME863 using xda app-developers app

i was able to get OTG working with a powered hub. last weekend i cracked open my hd dock for my droid 3 and added a $3 usb hub from monoprice.com. i now have 3 external usb ports that work flawlessly. $16 wireless keyboard/mouse combo from Gigabyte works like a charm from the couch with a 40" screen. hdmi+OTG+charge all work simultaneously.
the hdmi in the dock is just a pass-through so leave it alone. the wires for the usb port are labeled on the board. i crossed the brown(sense) with the bare ground. moved the r-w-g-b wires to there respective holes on the pcb for the hub. there are 3 empty holes on the pcb for the hub witch you can easily determine one is for power and the other 2 are ground (like there was an option for external power that didn't get soldered on the board). i ran wires from the power and ground holes i found on the hub to the original red and black holes on the dock pcb to piggy back power. i also relocated the led to a new hole in the front of the dock.
i also played around trying to get dock mode to work at the same time(if you actually want that). it seems if you only momentarily ground sence wire bur leave it hooked to the dock it will go back into dock mode but all devices that were initialized seem to keep working. you could in theory hold down a button after docking to initialize the usb accessories than let go to put it back into dock.
i also tried to find a way to get the audio out port to work (under the assumption it functioned like a usb sound card) but in the end i gave up as i cant think of an instance i would use it as the audio already feeds through the hdmi port. i would like to know if anyone gets it working though.

Got it working as well
Just wanted to say that I got it to work with a similar setup as kaiw1982.
I bought a powered usb hub and installing 2 apps to get mass storage support:
usb host controller for host support and paragon ntfs&HFS+ for ntfs support.
Running XT860 with Minimoto 1.7 and Maverick 4.0
Hope this helps

Droid3
TheRabbit2 said:
Just wanted to say that I got it to work with a similar setup as kaiw1982.
I bought a powered usb hub and installing 2 apps to get mass storage support:
usb host controller for host support and paragon ntfs&HFS+ for ntfs support.
Running XT860 with Minimoto 1.7 and Maverick 4.0
Hope this helps
Click to expand...
Click to collapse
Hello,
I have a Droid3 and will be retiring it soon. I can use it as an XBMC media center IF I can get ethernet to work on it. My WIFI connections are NOT stable enough to broadcast live 1080p TV although SD TV does work.
Have either of you tested a USB-ETHERNET adapter with the droid3?
Thanks

NewJerseyNinja said:
Hello,
I have a Droid3 and will be retiring it soon. I can use it as an XBMC media center IF I can get ethernet to work on it. My WIFI connections are NOT stable enough to broadcast live 1080p TV although SD TV does work.
Have either of you tested a USB-ETHERNET adapter with the droid3?
Thanks
Click to expand...
Click to collapse
I don't have one but I'd give it a low chance of working since support for USB devices on anything older than Android 3.x isn't that good. About the only things that work are mass storage devices like flash drivers and HID input devices like keyboards and mice.

I can confirm that the D3 supports otg, with or without a usb hub, but BOTH the phone and usb device must receive 5v from the same source.
OTG cable is also required due to the grounded ID pin.

I finally got around to ordering a proper OTG cable, I bought one like this:
http://www.amazon.com/gp/product/B009YPYORM
It works, some devices seemed to work okay without the hub, but best results are achieved using a hub. Then its just as reliable as USB support is when using a modded lapdock. Keyboard and mice work, mass storage devices like flash drives work, and surprisingly the Files app supports them and gives an eject option in the notification bar.

Dell Streak 7 Host OTG Adapter for usb devices: Game pad, usb drive, mouse,keyboard

You can buy a Dell streak 7 usb otg host cable (100% working): -
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=221061467218
there are other sellers listing the same items, and you can check it on ebay, I live in canada and ordered from china. It took around 15 days to deliver.
I recommend buy a usb female to dual (2) male usb Y cable: -
http://www.ebay.com/itm/USB-2-0-A-F..._USB_Cables_Hubs_Adapters&hash=item27ba21e9e4
steps to follow:
1. Root your dell streak and install USB OTG Helper.apk from android play store.
2. Switchoff dell streak 7,
3. Connect dell usb host cable (pdmi to usb otg adapter) to male connector of usb Y cable, and then connect usb device to female connector of usb Y cable.
4. Switch on dell streak 7.
5. After, Dell streak lock screen, connect another male connector of usb Y cable to power source (Dell Ac adapter).
6. go to usb otg helper and click on mount, it can may start adobe reader, don't worry.
7. go to es file explorer, and your drive is usb_drive_1.
Thanks & Regards,
Sahota

If the streak 7 is on the dell dock which has a micro USB input on the back... is it safe to assume that the docks power could sufficiently charge the streak and supply enough juice to a otg micro USB y cable to two female? I want to have a keyboard with a built in mouse pad connected, and have a 32gig flash connection available simultaneously
Edit: forgot to point out, dock is hard wired in my car, and thought it obvious that the dock would bypass the need for the 30pin. Just trying to learn if anyone has been successful at getting the streak to host through the oem dock.
Sent from my Galaxy Nexus using xda premium

No, the dock does not work for OTG purposes. The dock is wired the same as the USB data cable, which is different from an OTG adapter. That's why you can't use the USB data cable with just a USB gender changer for OTG purposes. The only way to use USB devices with the Streak 7 is with an OTG adapter and a USB Y cable with two male USB and one female USB ends and plugging one male end into the OTG adapter and one male end into a USB AC adapter to supply power for the USB device as the Streak 7 does not supply power over USB. You also need to power off the Streak 7 and then plug in the OTG adapter and power it back up then plug in the USB Y Cable, USB AC adapter, and USB device. There are two useful apps on Google Play for setting up and using USB devices with your Streak, or any Android device. One is USB Host Controller to monitor when the device is plugged in and working, and the other is USB Mass Storage Watcher which allows you to set an option for auto-mounting USB flash drives when plugged in.
Sent from my Streak 7 using witchcraft

Works as posted. It did take me a bit of to get set up. Thanks again.
Sent from my Dell Streak 7 using xda app-developers app

Loading Streak
Just a short question:
will the Streak (and not only the device) get power from the y-cable ?
Thanxs in advance
Zorbas

Unfortunately no, it only powers the device. The OTG adapter prevents it from charging.
Sent from my Streak 7 using witchcraft

OTG and Power
zenisnotchosen said:
Unfortunately no, it only powers the device. The OTG adapter prevents it from charging.
Sent from my Streak 7 using witchcraft
Click to expand...
Click to collapse
Is there any solution ? Together with an external ssd the Streak would make a wonderful car music and movie station. Without external power - not so much.
I am capable of modify or add some cable. Couldn´t it be done like that ?
And thanks for your quick response.
Zorbas

I'm not 100% so I could be wrong, but I don't think it's possible. By the way the OTG adapter seems to work you have the choice of USB functions or charging. you have to power off the device and plug in the OTG adapter then power it back on to get it to work, and once you unplug it and plug the data/charge cable back in it turns off OTG functions and you have to reboot again. I know the data/charge adapters and the OTG adapters are wired differently (that's how the OTG adapter enables USB function on boot if plugged in) so you could try taking apart both adapters and combining the pin connections of the two. I'm almost positive this won't work though. Plus if it did I'd imagine we'd already see them available just like the OTG adapter.
Sent from my Streak 7 using witchcraft

If you want to both charge and use otg you need an official dock as that's the only one with all the pins exposed (as in available to the user).
I'll have to (re)check, but I believe it can both charge and accept otg devices.
Dock charging is serviced by different pins then the normal usb charge. afaik only the official dock has an otg port, generic docks dont.
It might be possible to hack a cable to do both, but the sold ones are not wired to do this by default.

The dock will not support OTG without modification though (maybe that's what you meant). I've tried without modifying the wiring and it will not enable OTG.
Sent from my Streak 7 using witchcraft

My 2nd gen dock does without modification, you are using the actual OTG port correct? And you're providing power right? The S7 will not provide power period.
Of course it requires using a custom rom as the stock rom doesnt support OTG.
I've been able to use otg and hdmi out on my tv simultaniously, I dont recall if it can charge but otg definitely works.

My dock only has the mini USB data port, HDMI port, 3.5mm audio jack, and power port. The mini USB port does not work for OTG. Maybe it's because my dock isn't second gen though, I don't know if it's first or second gen. Yes the stock kernel does support OTG. I have stock 3.2 and OTG works perfectly with the OTG adapter.
Sent from my Streak 7 using witchcraft
---------- Post added at 08:38 AM ---------- Previous post was at 08:34 AM ----------
Must be first gen, it's labelled Rev. A00.
Sent from my Streak 7 using witchcraft

As far as I'm aware:
Gen 1: Designed for S5
Gen 2: Designed for S5 and S7
And both contain the following ports:
Dock power connector
USB-OTG (usb mini-AB female)
USB-Slave (usb mini-b female)
Line out
Speaker out
(see wikipedia for usb port definitions)
I have not heard of a version not containing both usb ports.
I personally have a 2nd gen dock and I believe that my info is correct for the 1st gen dock.
Could you provide pictures of the dock/original box? By what you're saying it's an official dock from dell I assume?

Yes official dock. Only one mini USB port. it supports both Streak 5 and Streak 7, it has both clear plastic pieces that support the phone/tablet standing. Came with Dell AC USB power adapter, Dell mini USB to USB make cable, and Dell power cable (barrel plug to male USB).
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Couldn't find the box. If I do I'll post pics. Let me know if you need anything else.
Sent from my Streak 7 using witchcraft

Also here's the bottom.
Sent from my Streak 7 using witchcraft

Whoops! my memory was playing tricks with me, it only has one port.
But we have the same dock, that's the 2nd gen dell dock.
As I said though, you can do otg though that dock as long as
you have a rom that supports otg (stock roms do not)
you have a powered usb hub (as the S7 does not supply power)
an approporate cable
The 2nd gen dock (and I believe the 1st gen also) has a micro usb-AB port, and not the standard micro-usb B port.
It's one of the few devices fully in-spec for usb-otg. (nearly all devices are out of spec in that they use have a micro-uub A female port and yet support otg, otg devices were always supposed to use micro-usb AB female ports, but micro-usb A is depreciated now)
You're 'supposed' to use one of these:
To properly use otg, but you can functionally get away with using a Mini-A male <-> Standard-A female.
This is what I used and I can confirm it works as long as you meet all 3 requirements up above.
I'm not sure how important it us to use a Mini-A male <-> standard-a female instead of the more common mini-B male <-> standard-a female.
If you dont supply your own power, the S7 will simply not detect anything at all.
Even with a powered hub it took a lot of fiddling with it to get it to initialize the hub (hub turns on if it detects a host, and it took much time to get it to power up).
I can only confirm that a keyboard and mouse work though, none of the roms are set up to accept drives (mostly config issue, not inherently unable to).
Edit: I had already dicussed this in a previous thread, repost:
TheManii said:
The 2nd gen dock has a mini-AB port.
Left is a mini-A connector, right is a mini-B. Thusly the 2nd gen dock can accept either and you can use either host mode or slave mode.
I assume host and slave both use the same pins on the dell 30 pin port, if that is the case then I guess you cant use it as both a host and slave at the same time.
The original standard used mini A/B ports and connectors. The current standard is to use their eqivilent micro A/B ports and connectors. This is the proper way to do USB-OTG support.
Off topic: micro usb OTG cables are technically out of spec (if I am understanding it correctly).
The host device should have a micro-AB port if it supports hosting and the cable should be micro-B <-> micro-A.
The point of A ports and connectors is to physically indicate the device is capable of OTG support on that port. Otherwise you would have to randomly guess and plug things in to see if it'll work or not (at the hardware level, we'll completely ignore software support for now)
The above two cables are techincally out of spec, though the USB-IF isnt going to raid their factories and stop them or anything.
Is the proper way with usb-mini, I cant even find the equivilent usb-micro cable though. Admittedly it's rather useless though, as things such as usb keyboards and flash drives are perfectly compatable, but never have a port.
I use a mini-A male <-> usb-A female cable, which is a close compromise.
Click to expand...
Click to collapse
Click to expand...
Click to collapse

I tried using mini USB to female USB and using a gender changer on a mini USB to USB male cable and it doesn't work for me. I wish it would. And my stock ROM does support OTG. I can use it fine with my standard OTG adapter.
Sent from my Streak 7 using witchcraft

Which rom are you using exactly?
I dont remember how much testing I did on stock roms, I spent most of it testing on ICS (i think?, it was months ago)

Dell official Honeycomb 3.2 514 21700 if I remember correctly. It also worked on 503 19535 which is what my Streak 7 came with preinstalled. And thanks for trying to help.
Sent from my Streak 7 using witchcraft

TheManii said:
As I said though, you can do otg though that dock as long as
you have a rom that supports otg (stock roms do not)
you have a powered usb hub (as the S7 does not supply power)
an approporate cable
Click to expand...
Click to collapse
I have recently got myself the Dell Official HOME Dock for my Streak 7 (4g version, Stock HC, rooted). I also have a "mini USB male to USB female" like the one you have shown. I tried connecting my Flash drive using these, but obviously it would not work.
So I wanted to understand:
What custom ROMs support OTG?
What exactly do you mean when you say a "powered usb hub"? Do you mean I need a USB "Y" cable and have one male connected to the power?

Flashcast without externally powered OTG cable (No invasive cable cutting required!)

Note: You will still need a NON-POWERED OTG cable though, but there's no need to cut it.
Having only a non-powered OTG cable and eager to hack my Chromecast, I went looking for other cables/adaptors lying around my house in an attempt to find an alternative. Here's what I came up with.
Things you will need:
NON-POWERED OTG Cable
Male-to-Male USB Cable
USB HUB
Steps:
1. Connect the micro USB end of the OTG cable to the Chromecast and the other end to the male end of the USB hub.
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2. Insert your Flashcast thumbdrive into one of the ports of the USB hub and the Male-to-Male USB cable into another port.
3. Insert the other end of the Male-to-Male USB cable to your preferred USB power source. (I used a portable charger for convenience sake.)
There are many other possible solutions depending on the cables/adaptors you manage to find. The point I'm trying to make is, instead of sourcing for a rare cable days or weeks of shipping time away from you, an immediate alternative might just around the corner waiting for your discovery.

yangzai said:
Note: You will still need a NON-POWERED OTG cable though, but there's no need to cut it.
Having only a non-powered OTG cable and eager to hack my Chromecast, I went looking for other cables/adaptors lying around my house in an attempt to find an alternative. Here's what I came up with.
Things you will need:
NON-POWERED OTG Cable
Male-to-Male USB Cable
USB HUB
Steps:
1. Connect the micro USB end of the OTG cable to the Chromecast and the other end to the male end of the USB hub.
2. Insert your Flashcast thumbdrive into one of the ports of the USB hub and the Male-to-Male USB cable into another port.
3. Insert the other end of the Male-to-Male USB cable to your preferred USB power source. (I used a portable charger for convenience sake.)
There are many other possible solutions depending on the cables/adaptors you manage to find. The point I'm trying to make is, instead of sourcing for a rare cable days or weeks of shipping time away from you, an immediate alternative might just around the corner waiting for your discovery.
Click to expand...
Click to collapse
Did something very similar myself too, has worked using 2 or 3 hubs. Worth noting a cheaper crappy hub is far more likely to work for this than a posh expensive one, as some have protections to prevent power going the wrong way through the hub, as I believe this is specified in some of the standards.

Literally right Before reading this thread I successfully rooted my Chromecast with this method, but to note my usb hub is powered by an ac adapter, i assumed this was a requirement.
Sent from New Nexus 7

This will only work if your hub will backfeed. I had to use a external hard drive power y cable.

hearnia_2K said:
Did something very similar myself too, has worked using 2 or 3 hubs. Worth noting a cheaper crappy hub is far more likely to work for this than a posh expensive one, as some have protections to prevent power going the wrong way through the hub, as I believe this is specified in some of the standards.
Click to expand...
Click to collapse
sfetaz said:
Literally right Before reading this thread I successfully rooted my Chromecast with this method, but to note my usb hub is powered by an ac adapter, i assumed this was a requirement.
Sent from New Nexus 7
Click to expand...
Click to collapse
jercb123 said:
This will only work if your hub will backfeed. I had to use a external hard drive power y cable.
Click to expand...
Click to collapse
Sadly, mine didn't come with an AC adaptor, had to improvise. Like what hearnia_2K said, most cheap hubs should work, and posh ones will likely come together with an AC adaptor anyway.

Worked great with a rockband USB hub.

blitz_7 said:
Worked great with a rockband USB hub.
Click to expand...
Click to collapse
Just bought a Belkin powered USB hub from local Walmart on clearance for $4. Thought it was a bust till I took jercb123's advice and used a Y USB cord from one of my external HDD's.Used the other end of the Y cable plugged into one my phone wall chargers and took with first try. Thanks for this.

Did I screw up?
I went out and purchased a non-powered otg cable and before reading any posts( I know I should have read thru this thread a couple of times, but I didn't) I started connecting things to each other. the light on the chrome cast was white then it went red. I unplugged everything then connected the chromecast to my TV via HDMI. the screen said it was updating and got as far as 10% before I unplugged it. I waited a few minutes then plugged into my tv again and the screen said updating, 0% then 10%. I unplugged it again.
A couple of facts to consider:
1. I did not yet down load the new image and burn it to a usb drive.
2. the chrome cast, before the latest connection to the HDMI of the TV, was still
not updated.
Did I some how allow the update to happen? what should I do? do I give up on rooting this for now? Thanks for your answers and help!!!( I hope I made some sense!)

laserbiz said:
I went out and purchased a non-powered otg cable and before reading any posts( I know I should have read thru this thread a couple of times, but I didn't) I started connecting things to each other. the light on the chrome cast was white then it went red. I unplugged everything then connected the chromecast to my TV via HDMI. the screen said it was updating and got as far as 10% before I unplugged it. I waited a few minutes then plugged into my tv again and the screen said updating, 0% then 10%. I unplugged it again.
A couple of facts to consider:
1. I did not yet down load the new image and burn it to a usb drive.
2. the chrome cast, before the latest connection to the HDMI of the TV, was still
not updated.
Did I some how allow the update to happen? what should I do? do I give up on rooting this for now? Thanks for your answers and help!!!( I hope I made some sense!)
Click to expand...
Click to collapse
Once the update has been downloaded, there is no easy way to root the device. The only way to get out of recovery mode is to let it update, unless you're willing to disassemble the device. If you are that desperate to root, you can attempt to force a USB boot by using the method described here. However, that method is quite invasive and possibly dangerous, and I can't be held responsible if using it breaks your Chromecast.

Hmm i followed the methods mentioned here but flashcast isnt getting loaded My chromecast is new and hasnt been turned on since I ordered it last month ( I've been away) so its still new in the box. I also have a USB 4 port belkin hub with its own power source. I have that plugged into the wall...cable to the hub....USB stick in 1 port with the flashcast bin loaded onto it....other port has usb cable to chromecast which is then hooked to TV. I hold button on cast and connect power..Red light comes on..(still holding button)....nothing happening...I got like 3 dots on my screen but nothing happens even after holding down for 30+ seconds. If i dont press the button on cast and connect power..then it just boots normally ideas?

Lpuboy87 said:
Hmm i followed the methods mentioned here but flashcast isnt getting loaded My chromecast is new and hasnt been turned on since I ordered it last month ( I've been away) so its still new in the box. I also have a USB 4 port belkin hub with its own power source. I have that plugged into the wall...cable to the hub....USB stick in 1 port with the flashcast bin loaded onto it....other port has usb cable to chromecast which is then hooked to TV. I hold button on cast and connect power..Red light comes on..(still holding button)....nothing happening...I got like 3 dots on my screen but nothing happens even after holding down for 30+ seconds. If i dont press the button on cast and connect power..then it just boots normally ideas?
Click to expand...
Click to collapse
The Chromecast needs to be connected to the USB-B port of the hub using a regular OTG cable. See my post here for more information.

tchebb said:
The Chromecast needs to be connected to the USB-B port of the hub using a regular OTG cable. See my post here for more information.
Click to expand...
Click to collapse
Then it dosnt turn on. I put the chromecast with a regular OTG cable connected to it connected to usb to mini B connector to Hub....flash drive in other of the 4 USB ports on hub...and port was powered with power cable that it came with.
This is the HUB I have

Lpuboy87 said:
Then it dosnt turn on. I put the chromecast with a regular OTG cable connected to it connected to usb to mini B connector to Hub....flash drive in other of the 4 USB ports on hub...and port was powered with power cable that it came with.
This is the HUB I have
Click to expand...
Click to collapse
In any case you can't have both the chromecast and the flashdrive on the ports - they cant communicate over the ports. One of them must be on the male end of the hub.

Any chance to get this working without a male-to-male usb cable? I have an unpovered otg cable and few powered and unpowered usb hubs.....
thx

maarawoe said:
Any chance to get this working without a male-to-male usb cable? I have an unpovered otg cable and few powered and unpowered usb hubs.....
thx
Click to expand...
Click to collapse
It may work with certain powered hubs. Use the OTG cable to connect the USB-B port of the hub to the Chromecast, plug your USB drive into one of the USB-A ports on the hub, and then connect the hub's power. If the Chromecast turns on, you should be able to hold the button to boot from the USB drive.

tchebb said:
It may work with certain powered hubs. Use the OTG cable to connect the USB-B port of the hub to the Chromecast, plug your USB drive into one of the USB-A ports on the hub, and then connect the hub's power. If the Chromecast turns on, you should be able to hold the button to boot from the USB drive.
Click to expand...
Click to collapse
Hmm seems non of my hubs is able to backfeed the chromecast to turn it on so no other way than wayting for the Y otg cable...
Male to male usb cable seems to be more exotic part of any household than regular or Y otg

do what i did, i had a few spare male /female usb cables, i chopped 2 up and took the male ends and hooked them up together then taped them up XD it worked great !

maarawoe said:
Hmm seems non of my hubs is able to backfeed the chromecast to turn it on so no other way than wayting for the Y otg cable...
Male to male usb cable seems to be more exotic part of any household than regular or Y otg
Click to expand...
Click to collapse
can you show me a pic of your hub, it might be the one i have, i have this one

So I soldered a male to male usb cable but still no luck - d-link or belkin hubs I have are not able to pass the power to the otg...
Probably no other way than wait for the Y otg...

find a pic on google of your hub, cause if you look on mine the power plug is that little first one on the short side the mini usb , i hooked the unpowered otg cable to that and then to my Chromecast, then i put the usb drive on the big usb port on the bottom and the usb cable that would deliver power to the hub by connecting that one to the usb port on the top port of hub then to my pc. at first i was doing it the other way around and it wouldnt take, i would get those dots and a white screen then once i did it like that it worked.

OTG flash drive not working on Note 9?

I recently purchased a Sandisk 128Gb “duo” OTG memory stick – the sort with both a USB-A and a USB-C connector – to transfer files between my Note 9 and my PC.
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It works fine on my PC and on my Galaxy S8+ (it is recognised as soon as I plug it in) but my Note 9 fails to see it. I’ve tried having it formatted as both FAT32 and ExFAT with the same results.
As far as I can tell, both handsets are configured the same (Settings > Developer Options > USB Configuration is set to MTP), the only difference is that the S8+ is running Android 8.0 and the Note 9 is on 8.1.0. Both have the 1 October 2018 security patch installed. Neither are rooted.
Using the OTG Troubleshooter app (https://play.google.com/store/apps/details?id=com.homesoft.otgtroubshooter&hl=en) on the Note 9 gives me two green ticks (“USB Host Support” and “OTG Detected”) as well as two red crosses (“No USB Device Detected in Linux” and “No USB Device Detected in Android”).
It’s obviously not a problem with the stick (it works fine in the S8+) or my USB-C socket (OTG Troubleshooter recognises when it is plugged in), but I’m all out of ideas for anything else to try.

I've only tried to hook up a pen drive to the Note 9 once using the adapter that is included in the box - it didn't work. The drive works fine in a windows laptop as well as a Roku.

My otg Kingston. 128gb works perfect on my Note 9

I had the same exact problem with the same exact flash drive. It only worked as follows
Change usb to charge device
Open Samsung file manager
Let it format the drive
Then it is working every time I plug it
Hope this helps
Sent from my SM-N960F using Tapatalk

MICHAEL(SMHOS.ORG) said:
Download neo otg .apk enable root permission and enable otg and check if it will work if it doesn't work check the phone if the charging port or USB type C port is not bad ?
Click to expand...
Click to collapse
Thanks, but I don't really want to root my phone just for this. I think that the charging port is OK as I can charge the phone (and transfer files to my PC) using a USB-C cable.
grtmoby said:
I had the same exact problem with the same exact flash drive. It only worked as follows
Change usb to charge device
Open Samsung file manager
Let it format the drive
Click to expand...
Click to collapse
Thanks, but even when I change Settings > Developer Options > USB Configuration to "Charge", I still can't see the drive. I also can't find any way to format a drive using Samsung My Files (I assume that's what you mean by "Samsung file manager"?), even on my S8+ which can see the drive.

Philip said:
Thanks, but I don't really want to root my phone just for this. I think that the charging port is OK as I can charge the phone (and transfer files to my PC) using a USB-C cable.
Thanks, but even when I change Settings > Developer Options > USB Configuration to "Charge", I still can't see the drive. I also can't find any way to format a drive using Samsung My Files (I assume that's what you mean by "Samsung file manager"?), even on my S8+ which can see the drive.
Click to expand...
Click to collapse
This compatibility list from Sandisk is seemingly/hopelessly out-of-date:
https://kb.sandisk.com/app/detect
With that said,it's hard to say where the fault lies.
I'd contact both Sandisk & Samsung,hopefully it'll result in something more constructive than finger-pointing.
FWIW,my MEENOVA USB-C OTG adapter works just fine on the Snapdragon Note 9 (SM-N960U,T-Mobile US version) using a Sandisk SD Card:
http://www.meenova.com/st/p/dash_g3c.html

Can you connect the to the mobile through the converter supplied with the mobile
Will the mobile see it?
Sent from my SM-N960F using Tapatalk

Mate, I have 3 or 4 Eaget OTG sticks. They ALL work well on my Note 9.
I've used a 3rd party USB A to USB C adaptor to plug in a micro sd card reader and that works fine also. Also tested the Samsung adaptor that came in the box. Again no problems...
Not sure what your problem is but it sure is a head scratcher...

Thanks for the responses, which make me believe that it should work
I've done some more testing:
If I plug the memory stick (using the USB-C end) into my S8+ or my Note8, it is recognised immediately - so the memory stick is OK.
If I plug the the USB-A/USB-C converter which came with the phone into the Note9 and then plug the memory stick (using the USB-A end) into the converter, it is recognised immediately - so the socket on the phone is OK. (Although it works only if I plug the converter into the phone and then plug the USB into the converter, but not if I plug the memory stick in to the converter and then plug the converter into the phone).
But if I plug the memory stick (using the USB-C end) into the Note9 - nothing!

i have the same OTG and samsung 256GB USB C flash drive, i can use both without any problems in my note 9

OP. Any chance of trying the memory stick in another Note 9?
Sent from my SM-N960U1 using Tapatalk

Limeybastard said:
OP. Any chance of trying the memory stick in another Note 9?
Click to expand...
Click to collapse
I don't know anybody else who has a Note 9, though I may try popping in to a phone shop and just see if I can plug the drive in to one (it will only take a few seconds to know whether it can recognise it).
I also don't have access to another USB-C OTG drive to try in my Note 9, but that would be the other obvious thing to do.

Philip said:
I don't know anybody else who has a Note 9, though I may try popping in to a phone shop and just see if I can plug the drive in to one (it will only take a few seconds to know whether it can recognise it).
I also don't have access to another USB-C OTG drive to try in my Note 9, but that would be the other obvious thing to do.
Click to expand...
Click to collapse
Try the existing drive in another note 9 if possible and report back. Cheers.
Sent from my SM-N960U1 using Tapatalk

Where did you format the drive, PC or mobile....
If PC try doing it on the mobile after connecting using the adapter
Settings → Device maintenance → Storage → three dots top right → Storage settings → SanDisk usb drive→ Format
Once completed,unplug from mobile and try to connect it without the adapter
Sent from my SM-N960F using Tapatalk

Philip said:
I don't know anybody else who has a Note 9, though I may try popping in to a phone shop and just see if I can plug the drive in to one (it will only take a few seconds to know whether it can recognise it).
I also don't have access to another USB-C OTG drive to try in my Note 9, but that would be the other obvious thing to do.
Click to expand...
Click to collapse
Hello. I have exactly the same problem. But a flash drive from another manufacturer. Did you find a solution to the problem?
---------- Post added at 11:16 PM ---------- Previous post was at 10:47 PM ----------
grtmoby said:
...If PC try doing it on the mobile after connecting using the adapter...
Click to expand...
Click to collapse
it does not connect using an adapter.
I formatted it with galaxy S7 (by the way it defines this flash drive), and nothing happens

I use the same otg. No problem here on note 9. Are you using phone case? Sometimes the usb isnt insert properly with case.

I think I’m about to give up on finding a solution, having tried just about everything (including the ideas mentioned above).
I’ve tried formatting the drive with the phone, using the USB-C/USB-A adapter that came with the phone. Worked fine, but the phone still didn’t recognise the OTG drive afterwards.
It’s not a physical connection issue (on the rare – and not repeatable - occasions that the OTG drive has worked in the phone, wiggling it around makes no difference). I’ve tried all my testing without a case fitted and the OTG Troubleshooter app that I mentioned above reliably indicates “OTG Detected” when I plug it in.
It’s not a faulty OTG drive – it works fine in my other phones (S8+ and Note 8). All are Exynos.
It’s not a faulty socket on the Note 9 – any other USB-C plugs (including the adapter which came with the phone and a USB-C cable connecting it to my PC) work faultlessly.
My best guess is that there’s some incompatibility – perhaps some sort of timing issue, but I’m not a hardware guy – between this particular OTG drive and this particular phone. The fact that the same combination works for some people here, but not for others, suggests that it’s just one of those strange compatibility issues, but without gathering a whole lot of data about what exact configurations work and which don’t, it’s almost impossible to troubleshoot - and there probably aren’t enough people here to gather sufficient data to do that.

This information on USB OTG may be helpful.
https://en.m.wikipedia.org/wiki/USB_On-The-Go
I don't think there is a USB otg flash drive
If I understand correctly it's the phone that can act as USB host or slave

My phone works just fine with Samsung USB 128 gigabyte flash drive, but recently it just randomly stops working. I don't have any solution but I know that pendrive is okay USB cable is okay the problem is in the note 9. I tested it with S8 phone and other Huawei phone and it works like charms. Note 9 just randomly stopped working. What the hell??!?

DeVilio said:
My phone works just fine with Samsung USB 128 gigabyte flash drive, but recently it just randomly stops working. I don't have any solution but I know that pendrive is okay USB cable is okay the problem is in the note 9. I tested it with S8 phone and other Huawei phone and it works like charms. Note 9 just randomly stopped working. What the hell??!?
Click to expand...
Click to collapse
your usb c port in the phone?