be quiet! DARK BASE PRO 900 ATX Full Tower Computer Chassis - Black/Orange Motherboard Compatibility: Micro ATX / ATX / E-ATX / XL-ATX Front Ports: USB 2.0 / USB 3.0 / Audio / Controls 120mm Fans: 10 Side Panel Window: Yes Side Air duct: Yes Expansion Slots: 8 140mm Fans: 9