Thermaltake Versa H21 Window Mid-tower chassisIdeal for home-computer builders and gamers, with enough space for high-end hardware and expansion. The ample ventilation options, cleanable air filter, and a perforated mesh bezel help to keep the entire system cool and dust-free. Versa H21 combines a manageable frame size with extensive options to customize user’s computer or gaming systemAll black DesignDesigned for gamer, perforated metal mesh front and top panel to allow quick heat dissipation and rapid air intake for maximum ventilation. The heighten foot-stands at the bottom help to enhance airflow. Featuring a transparent side window to offer a direct view of inner system.Tool-free InstallationInnovative tool-free drive bay design minumized the hassels of installing/removing. Trio drive bay concept (3x5.25”+3x3.5”+ 3x2.5”), a perfect ratio for accessory and storage devices.Handy I/O portsThe perforated front-top panel has implemented one data transfer SuperSpeed USB 3.0 port along with one standard USB 2.0 port, a HD microphone and headset jacks, to grand direct access when needed.Optimized VentilationPreinstalled one 120mm rear exhaust fan, optional 2 x 120mm intake fans to optimize system ventilation with dust filter.Convenient SupportPre-mounting holes to support motherboards up to standard ATX and CPU cooler installation, long graphic card also supported as well as Advanced Cable Management and Liquid Cooling System.