This power adapter cable makes it possible to connect the P4 ATX (ATX12V1) of a motherboard to a 4- pin standard Molex connector. The adapter is dedicated to the CPU power supply. Without it, you can’t power up your PC. Product features: ¦ Input connector : 1x 4-pin Molex male connector ¦ Output connector : 1x ATX P4 ¦ Cable length : 20 cm.