Color Wire Diagram 4 Pin Pc. Some psus may have three or four 12 volt 4 pin connectors. People with older power supplies often use adapters which convert from 4 pin peripheral cables to sata power cables.
Yellow 12 volts 12v1 ground. People with older power supplies often use adapters which convert from 4 pin peripheral cables to sata power cables. Pson it can be shorted to ground to start psu grey.
Pin 6 orange receive wire.
Fans and on board fan headers are backwards compatible. There are three pins for each voltage. Pins 1 through 4 pins 5 through 8. Pin color function 1.