FSP FlexGURU 300W Power supply FLEX ATX ATX2.52 / Flex ATX1.23 Black. Total power: 300 W, AC input voltage: 100 - 240 V, AC input frequency: 50 - 60 Hz. Motherboard connector: 20+4 pin ATX, Cable type: Fully modular. Purpose: Server, Power supply unit (PSU) form factor: Flex ATX, Bearing type: Kugellager. Product colour: Black, Fan diameter: 4 cm, Number of fans: 1 Fan. Included cables: CPU, Peripheral (Molex), SATA