Tecnoware Free Silent PRO 550. Total power: 550 W, AC input voltage: 180 - 264 V, AC input frequency: 47 - 63 Hz. Motherboard power connector: 20+4 pin ATX, Motherboard power cable length: 50 cm, PCI Express power cable length: 50 cm. Purpose: PC, Power supply unit (PSU) form factor: ATX. Product colour: Black, Fan diameter: 12 cm, Number of fans: 1 fan(s). Compliance certificates: CE, RoHS