Does not work for OTG tablets!

I have an older Win 8.1 tablet with only one Micro USB port. I bought this to charge my tablet and use the USB port for data and disk drive usage, etc.. Unfortunately my tablet battery drains and the cable does not charge the device when using a USB HDD or flash drive, etc.. This is my second purchased device, from another vender, that does not give me such functionality on my tablet.

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