iStarUSA D-416-500R8PD8 Black 4U Rackmount Compact Stylish Rackmount Chassis with 500W Redundant Power Supply 500W Redundant Motherboard Compatibility: 12 x 13 (EATX, ATX, microATX) Power Supply: 500W Redundant Internal 3.5 Drive Bays: 2 Expansion Slots: 7 Front Ports: 2 x USB 2.0 60mm Fans: 2 80mm Fans: 2 Dimensions (H x W x D): 7.00 x 19.00 x 21.77