Fractal Design Core 500 Black Mini-ITX Small Form Factor Computer Case Motherboard Compatibility: Mini-ITX Front Ports: 2 x USB 3.0 / Audio 120mm Fans: Rear: 1 – 120/140 mm fan (included is 1 Fractal Design Silent Series R3 fan, 1000 RPM speed) Top: 2 - 120/140 mm fan (not included) External 5.25 Drive Bays: 1 Internal 3.5 Drive Bays: 3 Internal 2.5 Drive Bays: 3