SilverStone RAVEN Series RV03B-W Matte Black Steel / Plastic ATX Full Tower Computer Case Motherboard Compatibility: SSI EEB, SSI CEB, Extended ATX, ATX, Micro ATX Front Ports: USB 3.0 x 2, Audio x 1, MIC x 1 120mm Fans: 1 x 120mm top exhaust fan included, 900rpm, 18dBA 4 x 120mm front fans optional 1 x 120mm rear fan optional 1 x 120mm side fan optional (NOTE: 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.) Side Panel Window: Yes External 5.25 Drive Bays: 7 Internal 3.5 Drive Bays: 10 (6 from 5.25 adapters)