The MasterBox K Series changed the case industry upon its launch. With an innovative mesh design that filters out dust, refracts light uniquely, and is easy to clean, the K500L set itself apart from the very beginning. Today, the same Fine Mesh spans numerous designs—in the latest Cooler Master cases and even imitated across the industry.

Intensively tested by reviewers, Cooler Master’s Fine Mesh proves to the world that providing airflow and dust filtration simultaneously can be achieved. Equal parts performance and aesthetics, the MasterBox K500 ARGB revamps the original K Series with vibrant, out-of-the-box lighting applied to game-changing airflow technology. Sometimes, it takes ingenuity to make a mesh.

The Fine Mesh design on the front panel is proven to provide proficient airflow while filtering out dust. Light also refracts and behaves uniquely to the Fine Mesh, creating a halo effect against illuminated components.

Two pre-installed ARGB fans and the illuminated accents on the front panel can be managed by either the motherboard or the included controller to create a comprehensive ARGB lighting system.

Hardware, custom-loop cooling, and the pure pride of the builder is shown in panoramic view through an edge-to-edge tempered glass side panel.

Airflow is optimized by a collaboration between the Fine Mesh front panel and top panel ventilation. Extra room is provided for optional fans and cooling components for future performance upgrades.

 Radiators
 Fans

Front:Three 120mm or two 140mm fans and up to a 280mm radiator.
Top: Two 120mm fans.
Rear: One 120mm fan or radiator.

All to ensure you don’t have to compromise on performance.

​The small ARGB Controller is a mini-sized controller that allows your Addressable RGB such as fans and LED strips to be powered and controlled even in PC systems without an A-RGB capable motherboard.​

The controller comes with 14 lighting presets to make full use of the Addressable LEDs in the system and also allows to be completely switched off by long pressing its button.​

It is also possible to attach any external 2pin button to it to be able to switch presets without having to open the system. For ease of use, Cooler Master allows the RESET button to be optionally connected to the controller and used as an external ARGB preset switch button.