Thermaltake Versa H35 Window SPCC ATX Mid Tower Computer Chassis CA-1D1-00M1WN-00 Case Type: Mid Tower M/B Type: ATX (12.0" x 9.6"), MicroVAX (9.6" x 9.6"), Mini ITX (6.7" x 6.7") External Bay: 2x 5.25", 1x 3.5" (Converted from one 5.25" drive bay) Internal Bay: 3x 3.5" or 3x 2.5", 2x 2.5" (2 behind the M/B tray) Front I/O Panel: 2x USB 3.0 Ports, 1x HD Audio