Suitable For: Business and Office Use, Supported Motherboard Form Factors: Micro ATX, Supported PSU Standard: ATX, Embedded PSU: 500w (24-Pin ATX, 8-Pin EPS), Drive Bays: 2x 5.25"; 1x 3.5" FDD; 2x 3.5" HDD; 1x 2.5" SSD, Expansion Slots: 4, I/O Ports: 2x USB 3.0; 2x USB 2.0; HD Audio, Fan Support: 1x 120mm Front Fan; 1x 80mm Rear Fan, Dimensions (D x W x H): 390 mm x 180 mm x 360 mm, Package size (D x W x H): 475 mm x 220 mm x 405 mm, Gross Weight: 5.5 Kg, Net Weight: 4.8 Kg. The Aywun 17307 is an easy to build, reliable, and excellent value Business and Home Office Micro-ATX PC case.