Coolmax 400W ATX 12V Power Supply CX-400B (Black) 120MM silent fan design, long life, noiseless and fastest cooling time High performance components are designed for extra long life and provide maximum system performance Heavy duty transformers designed to support high performance system several drives Cable-tube on main power cables for better cable routing and neatness & Colored fan (optional) Passive PFC: 0.7@230VAC;Active PFC: 0.95 min. (option)