Thermaltake Urban SD1 Micro ATX Computer Chassis CA-1A9-00S1NN-00 Case Type: Micro Case Material: SECC & Aluminum External Bay: 2x 5.25",1x 3.5" Internal Bay: 2x 3.5", 2x 2.5" Expansion Slots: 4 Front I/O Panel: 2x USB 3.0 Ports, 1x HD Audio