Power supply unit power 500 watt certificates 80 plus silver noise emission 236 db pci express connectors 8 pin 4 serial ata connections 6 cable management non modular mains voltage 100 240 volt mains frequency 50 60 hz cooling system active max fans 1 power factor correction active mtbf 100 000 hours motherboard power connectors atx12v 204 pins atx12v 44 pins combined power 33v5v 140 watt combined power 12v 576 watt colour black