Thermaltake Cas CA-3D9-60M1WA-00, Motherboard ATX, Colour (Exterior) Black, Drive Bays 1x 5.25", 1 x 3.5"/ Hidden 3x 3.5"/2.5", 1x 2.5", Expansion Slots 7x, 120mm Rear Fan Included, 1x USB 3.0, 1x USB 2.0, 1x HD Audio, Supports Mini-ITX/Micro-ATX/ATX, Tool-Free Installation, 600W 80 Plus Certified PSU Included. The Versa N21 has everything a gamer could want. Offering a sleek, streamlined mid tower windowed design that’s engineered from the ground up to deliver both the performance, cooling and expansion you need.