NORCO RPC-340 Black 3U Rackmount Rackmount Chassis Standard ATX power supply 3 External 5.25 Drive Bays Motherboard Compatibility: Support CEB(12x10.5), ATX (12x9.6), Micro-ATX (9.6 X 9.6), Mini-ITX (6.7 X 6.7) motherboard Power Supply: Standard ATX power supply External 5.25 Drive Bays: 3 External 3.5 Drive Bays: 9 Front Ports: 2 x USB 60mm Fans: 2 120mm Fans: 1 Dimensions (H x W x D): 5.10 x 16.9 x 18.9(H x W x D)