Key Features Chassis Type 1U Rack Motherboard Supported up to Form Factor ATX Power Supply 650W Weight 14.5 kg Dimensions WxDxH 17.2" x 22.4" x 1.7" Built-in SCA Bays 4 x 3.5" Hot-Swap Detail Specifications Model -- KGT20MX-065V4HF1 Chassis Type -- 1U Rackmount Motherboard Compatibility - Support ATX footprint Motherboard Motherboard Size -- 12" x 9.6" Power Supply - 650W Cooling System - 5 x 40x40x28 mm Fans, 15500 rpm Drive Bays -- 4 x hot-swap SATAII/SAS drive bays