Yeah you can do that. But they can be hard to hook up if it doesnt have plugs for the fan to directly plug into. Usually the fans plug into the motherboard.
http://www.hempcultivation.com/420/s...239#post544239 Thats where i learnt to do it if you need to use a powersupply. Its a lot harder than using a cellphone recharger because in a cell charger, there are only two wires

and electricity scares me.
Schmoke