Did you try to plug in HDD to hub and also put a power for example from PC?
Did it work?
This one has a microusb input on the opposite side of cable. You can see it on the 3d pic in description. Do you have the same hub?
I have the same problem. The tablet can’t make my external hdd works.
Probably you need smt like this
http://eu.banggood.com/Wholesale-Warehouse-4-Port-Micro-USB-OTG-Charger-HUB-Cable-For-Tablet-Phone-wp-Uk-975460.html?p=QZ14021624945201505Y
USB hub with external power
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