With Power Supply: No Power Supply Mounted: Bottom With Side Panel Window: No External 5.25" Drive Bays: 3 Internal 3.5" Drive Bays: 8 x 3.5"/2.5" Bays Front Ports: Audio, USB 2.0, and USB 3.0 Side Air duct: No Motherboard Compatibility: ATX, MICRO-ATX, MINI ATX, FLEX ATX, MINI ITX