500W computer power supply 1.5M power cord 3.3V magnetic design Multiple protection: OCP,SCP,OVP,OPP The electric flow is more powerful and stable 100% ATE testing, 100% Burn-in Testing AC INPUT FREQUENCY: 50/60Hz DC Connectors: 20+4P for M/B, 4+4 Pin, Molex, 4Pin for FDD, SATA Connector