a PSU. just kidding. also,Tada, SMOKE MACHINE. its 12v dc. uses a battery though, but that can be fixed
OMG that thing is rated at 75W... You'll need a really good PSU if you were connecting that to a computer.
Thats only 6.25 Amps, easy for any PSU, and if its running with a computer, just make sure it can handle the extra 6.25A.