Corsair Carbide Series 500R Black Steel structure with molded ABS plastic accent pieces ATX Mid Tower Computer Case Compatible with ATX (not included) Power Supply Motherboard Compatibility: Micro ATX / ATX Front Ports: 2 x USB 3.0 / Audio / 1 x IEEE 1394 120mm Fans: 2 x front-mounted 120mm fans 1 x rear 120mm fan Power Supply Mounted: Bottom External 5.25 Drive Bays: 4 Internal 3.5 Drive Bays: 6 x 3.5 hard drive bays with 2.5 compatibility