Antec, Inc, the leading global provider of high-performance PC components for the do-it-yourself market, PC upgrade, and gaming markets, leverages its experience providing reliable and quiet components to deliver the 4U22EPS650XR, a rackmount enclosure that provides rock-solid reliability and whisper-quiet operation. The 4U22EPS650XR features the stable and robust NeoPower 650 power supply, and is kept cool by quiet-running 80mm x1 and 92mm x2 ball bearing fans. The NeoPower 650 uses three +12V output circuits to delivering highly efficient and reliable power, while its low-speed 80mm fan delivers cool and silent operation.