Naturally Bright Airflow: A honeycomb mesh panel increases ventilation to improve airflow and keep your system temperatures low. The tower has 4 pre-installed 120mm double ring blue LED case fans (3 front, 1 rear) for crisp, icy lighting effects. Room for Growth: Versatile and open interior with 8 expansion slots for video cards, add-on cards, and performance upgrades. AIO Liquid Cooling: Maximize all-around AIO cooling potential with optional 360mm radiator in front, optional 280mm radiator on top, and optional 120mm radiator in the rear to keep your system frosty.