Power supply unit power 500 watt certificates 80 plus noise emission 34 db pci express connectors 8 pin 1 pci express connectors 6 pin 1 serial ata connections 4 efficiency 100 80 cooling system active max fans 1 power factor correction active motherboard power connectors atx12v 204 pins atx12v 44 pins floppy 1 peripheral connectors 4 pin 3 current strengths 3 3v 24 a 5v 20 a 12v1 34 a 5vsb 2 5 a 12v 0 3 a dimension