I've recently purchased the DPS G SERIES 1050W toughpower psu. The instruction says that I need to connect it to the motherboard, but for the life of me I cannot figure out what cable should I use. It seems that there wasn't one provided in the package. I have identified the port for USB connection on the PSU itself, but cannot figure out what kind of cable it should be. I can order one online, but can you help me figure out which one it should be? thanks.