iStarUSA E-40/ATX Black Steel 4U Rackmount Military Server Chassis 2 External 5.25 Drive Bays Motherboard Compatibility: 12 x 10 External 5.25 Drive Bays: 2 Internal 3.5 Drive Bays: 1 Front Ports: USB 2.0 x 2 Connector 120mm Fans: 1 Dimensions (H x W x D): 18.95 x 6.97 x 15.0