iStarUSA D-400-50R8PD2 Black Material of Front Bezel: Aluminum alloy Material of Handle: SECC Zinc-Coated Steel Material of Main Chassis: 1.2mm SECC Zinc-Coated Steel (Japan Made) 4U Rackmount Compact Stylish Rackmount Chassis with 500W R Motherboard Compatibility: 12 x 9.6 (Micro ATX / ATX) Power Supply: 500W Redundant External 5.25 Drive Bays: 4 External 3.5 Drive Bays: 1 Internal 3.5 Drive Bays: 2 Expansion Slots: 7 Front Ports: 2 x USB 2.0 80mm Fans: 1