Power 4 Pin F Connector
You can use a P3 4pin Power Supply for your P4 Motherboard or a P4 power supply for P3 board with this cable.
Pentium 4 motherboard requires the use of the new ATX 12 Volt power supply.
The ATX12V power supply has an extra 2x2 4pin cable.
Now you can use this adapter cable to make your existing standard ATX power supply work with a Pentium 4 motherboard.