Norco RPC-432 4U Short Depth Rackmount Case Support 13&Prime; Long Add-on Cards 4U rackmount design, super short depth, only 15.25 inch 2 x 3.5 drive bays, 1 x 5.25" drive bay Support EEB (12"x13"), CEB (12x10.5), ATX (12x9.6), Micro ATX (9.6 x 9.6), ITX (6.7 x 6.7) motherboard 2 x 120mm front fans for better ventilation One USB 3.0 front port, one USB 2.0 front port