iStarUSA D-3100HB Black Aluminum 3U Rackmount Compact 10x 3.5 Bay Hotswap microATX Chassis Motherboard Compatibility: 12 x 9.6 (ATX, microATX) Hot-Swap Drive Bays: 3.5: 10 Internal 3.5 Drive Bays: 1 Expansion Slots: 4 Front Ports: 2x USB 3.0 80mm Fans: 2 Dimensions (H x W x D): 19.06 x 5.22 x 19.00(W x H x D) Weight: 23.00lbs