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How to make USB OTG Adapter work on an Android device that does not support power out to this adapter!
on 29 August 2015
I purchased this USB OTG Adapter in the hope that my Asus Memo Pad 7 ME173X tablet would connect easily to it. Unfortunately it was not recognised and it would not connect at all. So I did some Youtube research and found out that The Asus Memo Pad 7 does not supply a power output to make any USB OTG work at all. So I researched some more on Youtube and found out a technical trick to make the USB OTG work with the Asus tablet and possibly other Android devices that do not provide enough power to make an OTG Adapter work.
Here are the main two steps.
You must have a ROOTED Android device to make this work. I went into Play store and downloaded the following apps to the tablet. King Root and rooted my Asus tablet with one click. I installed Root Checker and verified my tablet was rooted. Then I installed StickMount which mounts the OTG USB once it's plugged into the tablet and finally ES File Explorer, this program lets you find and access anything connected to the OTG USB.....Phew!, a lot to install, but trust me it worked for me.
I purchased a cheap 4 x USB hub (£1.99) with a short USB cable. I then made a homemade USB male to USB male cable by joining two unused USB cables together which I had lying around (just connect the red and black cables, the green and white are not needed). I plugged one end of the homemade USB cable into my Asus tablet USB/mains charging plug adapter (to provide the power) the other end into any one of the four spare USB connections on the USB hub. I then connected the USB power lead leading out from the USB hub directly into the OTG USB adapter. Then I plugged a USB memory stick with movies,music,photos and a few documents to test out into the USB hub, then plug the OTG USB adapter into the tablet. If you have followed the steps precisely you should get a large symbol flash up in the middle of your tablet screen indicating a connection is made.
Using StickMount, click 'mount', this will mount the OTG Adapter, then go into ES File Explorer and find the following path by selecting SD Card/USB Storage/sdb1/sda1. All being well you should now have access to the contents on your USB memory stick.
I think this setup will work with most tablets and android phones if they don't have enough power to power up a USB OTG Adapter by themself. Earlier versions of some Android phones and tablets may not work though.
I hope this lengthy instruction helps those who have struggled and failed to make the USB OTG Adapter work with their Android device..