Power supply unit power 850 watt max power 1 020 watt certificates 80 plus bronze noise emission 314 db pci express connectors 8 pin 4 serial ata connections 9 cable management fully modular mains voltage 100 240 volt mains frequency 50 60 hz cooling system active max fans 1 fan diameter 140 mm power factor correction active special features led power switch mtbf 100 000 hours motherboard power connectors atx12v 24 pins floppy 4 cur