Power supply unit power 550 watt max power 430 watt certificates 80 plus white noise emission 372 db pci express connectors 8 pin 2 serial ata connections 4 cable management non modular mains voltage 200 240 volt mains frequency 47 63 hz cooling system active max fans 1 fan diameter 120 mm power factor correction active mtbf 100 000 hours motherboard power connectors atx12v 24 pins eps12v 4 pins floppy 2 peripheral connectors 4 pin