Power supply unit power 550 watt noise emission 19 db pci express connectors 8 pin 1 serial ata connections 4 cooling system active max fans 1 power factor correction passive special feature auto fan control mtbf 80 000 hours motherboard power connectors atx12v 204 pins atx12v eps12v 44 pins floppy 1 peripheral connectors 4 pin 4 current strengths 3 3v 33 a 5v 28 a 12v1 16 a 12v2 18 a dimensions 85 x 15 x 14 cm safety featu