ZALMAN M1 Black Steel / Plastic Mini-ITX Tower PC Case Motherboard Compatibility: Mini-ITX Front Ports: Headphones x 1, Mic x 1, USB 3.0 x 2 120mm Fans: Top: 120mm Fan Vent x 2 (Fan optional) Rear: 120mm Fan Vent x 1 (1 Fan included) Front: 120mm LED Fan x 1 (1 LED Fan included) External 5.25 Drive Bays: 1 Internal 3.5 Drive Bays: Internal Bay x 3, Hot-swap Bay x 1 Internal 2.5 Drive Bays: 2 Expansion Slots: 2 Removable Filter: Yes