Features:Case Type: ATX Mid Tower. M/B Type: ATX, MicroATX. Mfr Part Number: NSE-400-KKN2. One optional 120/140mm fan can be installed on the left side panel to cool the graphics cards. Front I/O Panel: 2x USB 3.0 Ports, 2x USB 2.0 Ports, 1x Mic, 1x Audio (Supports AC97 / HD Audio).