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Will this work to power a usb hub for my nexus?

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Storage Will this work to power a usb hub for my nexus?

Ok, i have a OTG-Y cable to power my nexus 7 and a harddrive, but It seems that the hard drive gets so little power that it does not work if I have a usb extension cable or hub between it and the y-cable

So i need a powered USB hub, after much searching on ebay I can not find a 12v powered hub (car), so I should probably fix this myself.

So, what if i modify a normal usb cable like this on the picture so I can use another USB-power adapter to power the hub (and then harddrive, and other devices)

Will this work?
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the hard drive has 2 usb ports right?

the second port is only for the power not for the data. so you only need a power source and dont have to fix the cable.
and for the in car installment of the power source.
you can use
Mobile: - HTC One - HTC HD2
Tablet: - Nexus 7 (2012) - Galaxy Tab 3 7.0
 
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Quote:
Originally Posted by etsch View Post
the hard drive has 2 usb ports right?

the second port is only for the power not for the data. so you only need a power source and dont have to fix the cable.
and for the in car installment of the power source.
you can use
Nope, the hdd only have 1 usb port.
 
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Ok then put an power bank on the y cable

Gesendet von meinem HTC One mit Tapatalk
Mobile: - HTC One - HTC HD2
Tablet: - Nexus 7 (2012) - Galaxy Tab 3 7.0
 
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Quote:
Originally Posted by etsch View Post
Ok then put an power bank on the y cable

Gesendet von meinem HTC One mit Tapatalk
Ok, why a powerbank, why dont just use power from my car?
 
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Would also work.but if you have a y-cable you don't have do do anything with the cablrs

Gesendet von meinem HTC One mit Tapatalk
Mobile: - HTC One - HTC HD2
Tablet: - Nexus 7 (2012) - Galaxy Tab 3 7.0
 
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Quote:
Originally Posted by etsch View Post
Would also work.but if you have a y-cable you don't have do do anything with the cablrs

Gesendet von meinem HTC One mit Tapatalk
Perhaps I should explain a little better.
This is how the wiring is now:

This is what I want to do:
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