With Power Supply: No Power Supply Mounted: Top With Side Panel Window: Yes External 5.25" Drive Bays: 4 External 3.5" Drive Bays: 1 Internal 3.5" Drive Bays: 6 Front Ports: USB 2.0 x 2 , Mic x 1, Audio x 1 (support HD audio) Motherboard Compatibility: ATX, Micro-ATX