Power supply unit power 550 watt certificates 80 plus gold pci express connectors 8 pin 3 serial ata connections 8 cable management fully modular efficiency 100 92 cooling system active max fans 1 fan diameter 135 mm power factor correction active special feature led motherboard power connectors atx12v 204 pins floppy 1 peripheral connectors 4 pin 3 colour black weight 18 kg safety features psu protection over current protection