if you use a pci-e plug make shure either mark the wires or swap the pins, because I used the same thing originally and destroyed the power board, ended up having to find one on ebay (their not cheep......). Im using mine in a car and hooked it strait to the battery, not a good idea though. Now i have it hooked throuhg a dc-dc converter 9-18in-12volts out to prevent over and under voltage. make shure you have at least 8 amps min on your power source otherwise it has problems starting up. as you notice it recommends 13.33A @ 12vDC.