iStarUSA D-400-6-Black Black Steel 4U Rackmount Compact Stylish Server Chassis 6 External 5.25 Drive Bays Motherboard Compatibility: 12 x 10 External 5.25 Drive Bays: 6 External 3.5 Drive Bays: 2 Internal 3.5 Drive Bays: 2 Front Ports: USB 2.0 x 2 Connector Dimensions (H x W x D): 19.0 x 7.0 x 20.8