ZALMAN X3 is a High-End Computer Case Design, with Front & Side Tool-Free Design w/4 RGB addressable fans that sync controlled by pre-installed RGB LED controller for High Cooling Performance. *280mm radiator can be problematic to install on the X3. Width of the radiator should be 1mm. If you wish to use a radiator larger than 1mm please be sure to check the distance between the side of the radiator to screw hole. If the distance is below 5.7 you can install it to the X3 High-End Cooling System: X3 has four pre-installed 120mm addressable RGB LED Fans (Front x 3, Rear x 1) which creates a positive flow of air to provide an optimized gaming experience. Integrated front and side panel design: X3 is designed to outshine other computer case by implementing a single panel for the front and side. Feel free to dive in and experience a case that is fully customizable and easy to assemble/ disassemble. Spectrum RGB LED Controller: X3 comes with four addressable RGB LED fans and a pre-installed RGB LED Controller. Users can use the LED switch to customize the color, if they do not have a motherboard that supports sync (5V, 3Pin) mode. Integrated High Strength Tempered Glass: To provide a premium look to the X3 case, we intergrated high Strength tempered glass with tint level of 20% on the side panel to sho model : ZM-X3-WHITE tag : Computer Cases