SPECIFICATIONS Product Name Quantum Dimensions 400x215x488mm (LxWxH) Motherboard Support E-ATX, ATX, M-ATX, Mini-ITX Drive Bays HDD Cage (Bottom): 3.5″ x1 HDD Cage (Top): 3.5″ & 2.5″ Combo x1 SSD Bay: 2.5″ x2 SSD Bracket: 2.5″ x1 Fan Support Top: 120mm x2 or 140mm x2 Front: 120mm x3 or 140mm x3 Rear: 120mm x1 PSU Length Limitation 180mm CPU Cooler Clearance 165mm Material Steel Expansion Slots 7 Standard Slots Power Supply Standard PS2 ATX PSU I/O Panel USB 3.0 x 1 USB 2.0 x 2 HD Audio Radiator Support Front: 360 Top: 240 Rear: 120 GPU Length Limitation 350mm