Proper usage of a MOSFET to control USB
So I decided I'd give it a try, I bought AOP605, wired everything, and it works! :) So the following scheme is what can be used to control USB power using 3.3V input voltage:



When the GPIO pin is off, the USB DEVICE is off, switching the GPIO on switches on the USB DEVICE as well. I use 7.5k as R1 (I don't have 10k by hand) and it works well, too. Credit to betth and his post on sparkfun.com, I only changed the transistors to something more suitable for my case that I can buy here.