Thermaltake Commander G41/Black/Win/SECC Black SPCC ATX Mid Tower Computer Case (CA-1B4-00M1WN-00) Motherboard Compatibility: 9.6 x 9.6 (Micro ATX) 12 x 9.6 (ATX) Front Ports: USB 3.0 x 2, HD Audio x 1 120mm Fans: Front (intake) : 120 x 120 x 25 mm Turbo fan x 1 (1000rpm, 16dBA) Rear (exhaust) : 120 x 120 x 25 mm Blue LED Turbo fan (1000rpm, 16dBA) Bottom (intake) : (optional) 120 x 120 x 25 mm With Power Supply: Standard PS2 PSU (optional) Side Panel Window: Transparent Window External 5.25 Drive Bays: 3 External 3.5 Drive Bays: Converted from one 5.25 drive bay Internal 3.5 Drive Bays: 6 x 3.5 or 6 x 2.5