I purchased 5 new ATX power supply's (4) 600 watt and (1) 300 watt. I shorted the green wire with one of the black gound wires. I split half of the black wires for use with the 12 volt load and half for use with the 5 volt load .Wrapped all the rest of the black wires together, all the red together and the yellow together. The other colors have been left alone. 3 work fine but the 300 watt powers off as soon as you apply a load to it and must sit powered off for a while to reset. One of the 600 watt ocassionally powers off during use and also must sit to reset.