Thanks Meter 8
Join Date: Oct 2010
Location: Waterloo, Ontario
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It will only charge if the OTG cable has a 124K resistor from pin 4 to pin 5.
Your OTG cable has a short between ping 4 and pin 5, and as such the tablet will drive VCC out.
you would be plugging it into a host port on the hub anyway, which is not powered.
you will need a Y cable, and the SW on the N7 doesn't currently do both charging and OTG simultaneously, this is something I (and hopefully others) are trying to sort out.