iStarUSA D-314-MATX Black Steel 3U Rackmount Compact Server Case 3 External 5.25 Drive Bays Motherboard Compatibility: 9.6 x 9.6 (microATX, mini-ITX) External 5.25 Drive Bays: 3 Internal 3.5 Drive Bays: 4 Expansion Slots: 4 (full height & up to 165mm deep with hdds installed) Front Ports: 2 x USB 2.0 Dimensions (H x W x D): 19.00 x 5.25 x 15.35