Antec GX500 Window Black Steel ATX Mid Tower Computer Case Motherboard Compatibility: Micro ATX / ATX / Mini-ITX Front Ports: 2 x USB 3.0 / Audio In/Out 120mm Fans: 2 x 120 mm top fans 1 x 120 mm rear fan 2 x 120 mm front intake fans (optional) 1 x 120 mm side fan (optional) 2 x fan control switches Power Supply Mounted: Bottom Side Panel Window: Yes External 5.25 Drive Bays: 2 x 5.25 tool-less drive bays Internal 3.5 Drive Bays: 1 x 3.5 floppy bay - 4 x 3.5 tool-less HDD bays