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[Q] USB OTG - what have you tried to connect?

Hi,
I really like the idea of USB On The Go.
I have an external mobile USB sound card with amplifier (Fiio E7 DAC/AMP) that is connected to my PC via USB, and with my headphones via jack 3,5mm. It enhances sound quality a lot + it brings more power for big headphones.
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(it looks more less like on this picture)
I would want to connect it with my future Samsung Galaxy SII smartphone, that supports USB OTG, but some people say that USB OTG works only for mass storage devices.
Tell me please, what did you successful connected to your USB OTG supporting phone!

usb strapping htc 8x to an android device (wip)

Its a work in progress but I was able to get a galaxy nexus to recognize my HTC 8.1 then strapped together with usb otg powered cable with a charging micro usb connected to the otg
This worked in the bootloader mode and booted mode on the 8x. Didn't work when android was booted in tarp recovery. Android gallery on the galaxy nexus attempted the sync photos but failed.
I'm thinking the possibility of using a parallel usba to usba ustarcom cable might might be successful at reading the window phone file system.
I will add pics when I get to a pc.
Any suggestions or comments are apprecieated.
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Searching for USB C to power delivery+data transfer

Helo,
I want to install to my car tablet instead of radio, so I need posibility of charging and transfering data in the same time to the device, and I found tablet meeting my specifications, Kruger&Matz 7" EAGLE 702 (USB C, LTE, radio, mini jack).
So I would like to ask will it work if I use HUB USB C to 4 x USB 3.0, one USB3.0 as tablet power and rest of usb's as data connections. Or should I buy USB C Splitter (USB C to 2x USB C).
Would be great if first option will be working because it have external power supply.
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Can't connect phone to PC

Hey all, OnePlus 8 not detected in Ubuntu or Gallium OS, not detected by lsusb even though MTP is on, ADB and Fastboot don't detect the device and the device will not let me choose anything other than data transfer, everything else is all grayed out. I have tried re-installing adb, fastboot, drivers, wiping the device, using a different cable (I have 5 I'm playing with) and using a different device. Nothing is working. My phone is on EvolutionX ROM.
Also, the notification that shows whenever the device is connected to another and allows you to change the USB state (MTP, PTP, etc) does not show.

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Usb to C-usb android table to PC

I have a USB to C-USB to connect my android tablet to PC win 10 ,i can see it's connected but nothing show and no way to make files show, do i need a special usb to C-USB cable? or is there a way to connect Device to PC without cable?

If tablet's USB mode is set to "MTP" you should see the tablet's files / directories in Windows Explorer.
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What is type of your Android tablet's USB-port: USB-A, USB-B, Mini-USB, Mico-USB ?

this type;
also show on PC MTP USB Device.