Cooler Master V550. Nominal power: 550 W, AC input voltage: 100 - 240 V, AC input frequency: 47 - 63 Hz. Fan diameter: 12 cm, Fan location: Top. Motherboard power connector: 20+4 pin ATX, Cabling type: Modular. Form factor: ATX, Purpose: PC, ATX version: 2.31. Colour of product: Black