Green 500W 20+4-pin Dual Fan ATX PSU w/SATA Green 500W 20+4-pin Dual Fan ATX Power Supply Unit General Features: 500-watts total power Dual fan design One (1) 12-inch 20+4-pin ATX power connector One (1) 12-inch 4-pin 12V power connector Five (5) large Molex 4-pin power connectors One (1) small floppy power connector Two (2) SATA power connectors Complies with ATX12V 2.0 High Efficiency