Tante Google sagt:
ZitatAll asus boards i have used powered usb when off. In fact most gigabyte boards do as well(just not as much power on some of them).
Look in the bios for an option called EUP. if its there turn it off. it is a power saving feature to bring the system standby(off) power under 2 watts. This almost always turns off the usb ports.
It is under AI Tweaker. supposed to be disabled by default, but worth a look.
The AICharge is just an app for windows to allow the port to give more power(most times on USB3 ports since they are designed for more power) then the standard 500ma
Quelle: http://www.tomshardware.co.uk/forum/290210-30-power-shutdown