[HTC EVO 3D] chw9999:
OTG cable UBS storage devices findings

Read the thread, lol ;) Seriously, I think it was mentioned about post 8000 +/- a few hundreds that it is not working as we all whish it would. I for myself tried it as well (gotta trust nobody these days ;)), here are my results. as always, YMMV! May it last for the next 20 or so post, till somebody asks again… ;)

·	I bought an off-the-shelf (ebay) OTG cable, "compatible for Samsung S2" and a few other brands. whatever that specifies, <4 EUR.

·	I have a fat formatted 128 MB stick (keep it simple for the beginning), which loads flawlessly under XP and some non-computer gadgets like my Oscilloscope, BluRay Player and so on. Have a few folders in the root directory.

·	I have a powered USB hub

·	I have a Y-cable – additional A plug for support power supply - and miniUSB on the other side, and a mini->microUSB adapter. And a female-female Type A USB adapter to connect two male USB A plugs. I think I have quite a few adapters, one could call me adapted to a certain level...!

Setup without powered USB hub:

Connecting …

·	… Y-cable power end to power supply (this plpug does not transport data)

·	… other Typ A end (data plug) connects to the female-female USB-Adapter to the USB stick

·	… the miniUSB using the microUSB adapter plugged to the phone.

Result:

·	LED on Stick blinks a few times.

·	In the “Settings” nothing additional shows up, Mounting still greyed out as if no device would be present.

·	The app “USB Host controller” (XDA: http://xdaforums.com/showthread.php?t=1468531&highlight=usb+otg , Play Store: https://play.google.com/store/apps/details?id=hu.sztupy.android.usbhostcontroller) Shows the device, but alas, does not support mounting of the partition. (hint: If it is seeking endlessly, try anorientation change portrait-landscape-portrait, that shuts it off)

·	“USB Host Diagnostics 1.2” (https://play.google.com/store/apps/details?id=eu.chainfire.usbhostdiagnostics ) sees the device and claims support for it, but that’s all.

·	“USB Storage Watcher 1.1.2” (https://play.google.com/store/apps/details?id=com.skidmrk.umswatcher ) does not help, either. “USB Storage Watcher OTG” is not supported, hence I could not download it. Maybe someone could try…

Setup with powered USB hub:

Connecting …

·	… power cable to the USB

·	… miniUSB cable from the dedicated miniUSB jack of the USB hub (not a UBS out jack) to microUSB jack on the phone (yes, I do have a converter for this)

·	… the USB stick plugs directly into one of the jacks of the USB hub

·	… power LED on hub is on

Result:

·	Absolutely the same as above, with the exception that the additional USB hub is listed in “USB Host controller”.

I fiddled around with it the better part of 3 hours or so, setting mount points and what nor… and: finally gave up. It may have worked with a “real” hard drive, not a flash drive, but that was not available to me. Maybe someone want to start from here.

I hope somebody can figure it out – or did already.

EDIT: Damn! Just seen TomLeeDesire's Post: Could you specify what you did differently? Or did you "just" plug everything together? What means "My laptop is a powered usb hub"? Do you loop the signal through your laptop?

EDIT2: On second thought: You pulling my leg or what?

You connect your USB hub to the laptop (or use your laptop as a usb hub)

Plug in stick and phone

Transfer files...

Well, of course, that's the simpliest thing. One does not even need the OTG cable for this. You see both USB drives (stick and EVO) on the laptop...

But I certainly hope that's not what you implied?

Please specify! :)