Power supply unit power 450 watt max power 540 watt certificates 80 plus gold noise emission 264 db pci express connectors 8 pin 2 serial ata connections 3 cable management fully modular mains voltage 100 240 volt mains frequency 50 60 hz cooling system active max fans 1 fan diameter 80 mm power factor correction active mtbf 120 000 hours current 12v 37 a combined power 33v5v 90 watt combined power 12v 444 watt colour black dime