Power supply unit power 600 watt max power 660 watt certificates 80 plus platinum noise emission 136 db pci express connectors 8 pin 4 serial ata connections 8 cable management fully modular mains voltage 100 240 volt mains frequency 47 63 hz efficiency 20 93 efficiency 50 94 efficiency 100 92 cooling system active max fans 1 fan diameter 140 mm special feature power switch mtbf 160 000 hours motherboard power connectors