Power supply unit power 850 watt certificates 80 plus silver noise emission 36 db pci express connectors 8 pin 2 pci express connectors 6 pin 2 serial ata connections 6 efficiency 100 88 cooling system active max fans 1 power factor correction active motherboard power connectors atx12v 204 pins atx12v 44 pins eps12v 44 pins floppy 2 peripheral connectors 4 pin 6 current strengths 3 3v 20 a 5v 25 a 12v1 67 a 5vsb 3 5 a