SilverStone PS11B-Q Steel / Plastic Computer Case Optional Standard PS2(ATX) Power Supply Motherboard Compatibility: Micro ATX / ATX Front Ports: 2 x USB 3.0 / Audio 120mm Fans: Front: 2 x 120mm/140mm fan slot (1 x 120mm intake fan included) Rear: 120mm fan slot x 1 Bottom: 120mm fan slot x 1 External 5.25 Drive Bays: 2 Internal 3.5 Drive Bays: 3 Internal 2.5 Drive Bays: 2