Thermaltake Versa U21 Window Mid-tower Chassis With slick lines in a streamlined style, Thermaltake Versa U21 mid-tower chassis supports up to a standard ATX motherboard and CPU cooler installation. Additionally, the Versa U21 combines a manageable frame size with extensive options to personalize a computer or gaming system. Thermaltake Versa U21 is designed for those who are looking for a chassis with an outstanding thermal performance as well as with a simple appearance. Tt LCS Certified is a Thermaltake exclusive certification applied to only products that pass the design and hardcore enthusiasts standards that a true LCS chassis should be held to. The Tt LCS certification was created so that we at Thermaltake can designate to all power users which chassis have been tested to be best compatible with extreme liquid cooling configurations to ensure you get the best performance from the best features and fitment. Exquisite D model : CA-1G5-00M1WN-00 tag : Computer Cases