Fractal Design Define Nano S Black Silent Mini ITX Mini Tower Computer Case Motherboard Compatibility: ITX Front Ports: 2 USB 3.0 / Audio in/out 120mm Fans: Front: 2 x 120/140 mm fans (included is 1 Fractal Design Dynamic GP14 fan, 1000 RPM speed) Rear: 1 x 120 mm fan (included is 1 Fractal Design Dynamic GP12 fan, 1200 RPM speed) Top: 2 x 120/140 mm fan (not included) Bottom: 1 x 120 mm fan (not included) Internal 3.5 Drive Bays: 2 x 3.5 / 2.5 Internal 2.5 Drive Bays: 2 Expansion Slots: 2