im having a hard time finding this. Asus G750JX can anyone tell me how much power the USB 3.0 actually puts out?

ive had my g750 for a year now come with windows 8.1 but i had so many problems i went to windows 7 until recently i started to have driver issues with my usb kept having to reinstall the drivers every time i plugged in a flash drive so i went back t...