Absent Fans The structure of the chassis USB3.0*1+USB2.0*2+HD Audio Chassis Style: ATX I/O Connector Horizon and Vertical M/B: CPU cooler for ATX, M-ATX, and Mini-ITX Length-limited: 400mm Water Cooling: M/B High-limited: 160mm VGA Side: 360 mm (limited by 405 mm in length) M/B air cooling Real 120mm*1, Side 120mm*3 (optional), and Bottom 120mm*3 (optional) Storage: 1 PCI Slot: 7 Mental; 3.5′ HDD* 2 + 2.5′ SSD Measurements: L420 * W280 * H414 mm The case Measurements: L425* W280* H439 mm