Power supply unit power 350 watt noise emission 249 db pci express connectors 8 pin 1 serial ata connections 4 cable management non modular mains voltage 200 240 volt efficiency 20 84 efficiency 50 87 efficiency 100 84 cooling system active max fans 1 fan diameter 120 mm rpms 1 650 rpm power factor correction active special features energy star 60 power switch mtbf 100 000 hours motherboard power connectors atx12v 204 pin