How would you set up a second power supply just for fans and lights and such? It wouldn't be hooked up to the computer or anything and it would just be for fans and lights. I have tried running fans just alone to see if they work without having the computer, I'd just plug it into the psu and turn it on but it seems that I need to turn on a fully connected computer in order to run anything else. Is there a way to set it up so that I don't have to have a full computer connected to the psu?