With Power Supply: No Power Supply Mounted: Front Bottom With Side Panel Window: No External 5.25" Drive Bays: 2 External 3.5" Drive Bays: 1 Internal 3.5" Drive Bays: 3 Internal 2.5" Drive Bays: 2 Front Ports: USB 3.0 x 1 / USB 2.0 x 1 / HD Audio