Thermaltake Versa N21 Window Mid-tower Chassis The new Versa N21 window mid-tower chassis features a sleek mirror-pane design and supports up to a standard ATX motherboard and CPU cooler installation. The Versa N21 is ideal for space-conscious gamers who design with high-end hardware and expansion in mind. Additionally, the Versa N21 combines a manageable frame size with extensive options to personalize a computer or gaming system. Gaming-Oriented Concept Designed for gamer, the glossy black front/top panels deliver stylish images. The heightened foot-stands at the bottom help enhance airflow, and a triangular transparent side window offers a direct view of the inner system. Tool-free Design The innovative 5.25" & 3.5" tool-free drive bay design minimized the hassles of installation/removal. The trio drive bay concept of "1 + 4 + 1" offers a good ratio for accessories and storage devices. Hidden I/O Ports The top-front panel features one USB 3.0 data transfer port along with two standard USB 2.0 ports as well as HD microphone and headset jacks to grant direct access when needed. Optimized Ventilation A preinstalled 120mm rear exhaust fan and two optional 120mm intake fans with an integrated dust filter optimize system ventilation. Pre-mounted holes support motherboards up to standard ATX. CPU cooler installations with up to 160mm radiator at the top and 250mm long graphic cards are supported.