Power supply unit power 300 watt max power 350 watt certificates 80 plus bronze noise emission 132 db pci express connectors 8 pin 1 serial ata connections 4 cable management non modular mains voltage 100 240 volt mains frequency 50 60 hz efficiency 20 84 efficiency 50 87 efficiency 100 84 cooling system active max fans 1 fan diameter 120 mm rpms 761 rpm power factor correction active special features energy star 60 p