I don't get it my antec 900 case has these odd 10 pin usb plugs that have a white plastic thing covering one pin so it might be 9 pin and I don't know were they plug in!!! I only have the case so far to my build and want to buy the best mobo but I need to know if those go under onboard usbs or what.
They plug into your motherboard, usually at the bottom. Most motherboards have 2 connectors adding up to 4 USB connections.
computer fan is 12 volt as mentioned formerly get off to ya interior reach maplins. as for usb fan, the only style u could desire to get is a computer fan. usb is 500m amps. as for the amp, does it have a warmth sink? or a place on the pcb for yet another fan?