Materials Steel, Plastic Dimensions 210 x 500 x 493mm (ATX Mid Tower) Motherboard Sizes Mini-ITX, mATX, ATX 5.25" Drive Bays x 4 3.5" Drive Bays x 6 2.5" Drive Bays x 7 Cooling Front 2 x 120mm (included) or 1 x 200mm (optional) Cooling Rear 1 x 120mm (included) Cooling Top 1 x 200mm (optional) Cooling Bottom 1 x 120mm (optional) PCI Slots x 7 I/O 4 x USB3.0, HD Audio Power Supply PS2 ATX (bottom, multi direction)