SILVERSTONE RAVEN Series RV03B-WA Matte Black with Gray Trimming, Steel / Plastic ATX Full Tower Computer Case Motherboard Compatibility: Micro ATX / ATX / Extended ATX / SSI EEB / SSI-CEB Front Ports: 2 x USB 3.0 / Audio 120mm Fans: 4 x 120mm Front Fan 1 x 120mm Rear Fan 1 x 120mm Side Fan 1 x 120mm Top Fan If front panel is filled to capacity with six hard drives, then only two 120mm fan slots is usable. Installing 120mm fan into rear fan slot will take away space from the eighth expansion slot. Power Supply Mounted: Bottom Side Panel Window: Yes External 5.25 Drive Bays: 7 Internal 3.5 Drive Bays: 10 (6 from 5.25 Adapters)