With Power Supply: No Power Supply Mounted: Bottom With Side Panel Window: No External 5.25" Drive Bays: 3 External 3.5" Drive Bays: No Internal 3.5" Drive Bays: 5 Internal 2.5" Drive Bays: 2 Front Ports: 2 x USB 3.0 with included USB 2.0 adapter, Audio In/Out