Power supply unit power 650 watt certificates 80 plus gold pci express connectors 8 pin 2 serial ata connections 6 cable management fully modular mains voltage 100 240 volt mains frequency 50 60 hz cooling system active max fans 1 fan diameter 135 mm power factor correction active special feature power switch mtbf 150 000 hours motherboard power connectors atx12v 24 pins current 12v 52 a combined power 33v5v 100 watt combined power 12