Dimension 21.5” (L) x 9” (W) x 20.5” (H) 546mm (L) x 229mm (W) x 521mm (H)   MB Support ATX, mATX   Expansion Slots 8   Form Factor Mid-tower   Material Steel structure with black brushed aluminum faceplate   Drive Bays (x4) 5.25” (x6) 3.5”/2.5” Drive Caddies   Cooling (x2) 200mm Fans (x1) 120mm Fans   Front I/O (x4) USB 2.0 (x1) USB 3.0 (x1) IEEE 1394 (x1) Headphone, (x1) Mic 4-channel Fan Controller   Power Supply ATX (not included)