Power supply unit power 550 watt certificates 80 plus pci express connectors 8 pin 1 serial ata connections 4 cooling system active max fans 1 power factor correction passive special feature auto fan control motherboard power connectors atx12v 204 pins eps12v 44 pins floppy 1 peripheral connectors 4 pin 4 current strengths 3 3v 22 a 5v 21 a 12v1 15 a 12v2 10 a dimensions 85 x 15 x 14 cm