Power supply unit power 300 watt max power 350 watt certificates 80 plus bronze noise emission 314 db pci express connectors 8 pin 1 pci express connectors 6 pin 1 serial ata connections 4 cable management non modular mains voltage 100 240 volt mains frequency 50 60 hz efficiency 20 87 efficiency 50 89 efficiency 100 89 cooling system active max fans 1 fan diameter 80 mm rpms 2 219 rpm power factor correction active