Thermaltake Urban T21 Mid-Tower Chassis Cases CA-1A4-00M1WN-00 Case Type: Mid Tower Material: SECC External Bay: 3x 5.25", 1x 3.5" Internal Bay: 5x 3.5", 1x 2.5" Expansion Slots: 7 Front I/O Panel: 2x USB 3.0 Ports, 1x HD Audio