Internal Power Supply for PC, Free Silent PRO 550, Input Voltage 230Vac, 50/60Hz, ATX 12V v.2.01 Compliant, Main Switch, Surge Protection, Overload Protection, Short Circuit Protection, High MTBF Value, Very Reliable, Quiet Operation, 12cm Large Quiet Fan, Temperature Control of Fan Speed, Flat Connection Cable with 50 0 mm to 8 00 mm length, 1 x connector 20+4 pole, 1 x connector 12 V 4+4 pole, 1 x connector 6+2 PCI-E, 2 x Molex connector, 4 x SATA connector, dimensions 150 x 140 x 86 mm, weight 1.0 kg, colour: black