Arctic Cooling Silentium T11 White, Thermodynamic PC Case (PCACO-PCS1101-CB) The Silentium T11 features two ARCTIC F12 TC case fans. These fans complement with the framework of the chassis to provide best airflow and offer maximum cooling performance at a minimum noise level. The fans regulate their speed by themselves, making the setup a piece of cake. Besides the two intaking fans, the Silentium T11 incorporates an unprecedented feature, a VGA air hood, guiding cool intake air directly to the VGA board. This makes it possible to run even high-end VGA boards with silent cooling. he Silentium T11 showcases tool-free installation for quick assembly and upgrade. Side panel slides open easily with thumb screws. Similarly, tool-free and screwless installation for mounting 5.25-Inch drive bays is also very convenient for builders. It also includes 5.25 to 2.5/3.5 Inches SSD or HDD adapter for greater flexibility based on users' preferences. The Silentium T11 contains five bays for users to install Solid State Drives and Hard Drives: four of them are 5.25-Inch and one is 3.5-Inch. One of the 5.25-Inch bay is installed with a convertible mounting frame to fit 2.5/3.5 Inch SSD or HD as well. ith the durable steel construction, the Silentium T11 provides solid framework for internal computer hardware. Two USB and audio ports on the front of the chassis allow users to connect external and audio devices easily.