Smart Fan ControllerA self-contained fan controller can switch between 5 modes in the combo LED: red, blue, white, green, and 256 multicolor. Users can freely choose and set the certain mixed color, which will remain unchanged until the next PC reboot, or disable the LEDs by switching from ON mode to OFF mode.Concentrated Compression BladeCustom designed for high static pressure requirements of demanding applications such as radiators, the concentrated compression blade is engineered to focus the weaker, inner circle of air outward, allowing the outer section to pressurize the air.Hydraulic Bearing with Low-Noise DesignThe hydraulic bearing self-lubricates with a high quality, friction-reducing substance which lowers operating noise and improves efficiency. The seal cap prevents leakage of the lubricant, and improves the lifespan of the unit. By clicking the “SPEED” button on fan controller, the noise level can be reduced to 29%.Wind Blocker FrameTo achieve maximum static pressure in all applications, the wind blocker frame is designed to work with the Concentrated Compression Blade`s (CCB) pressure mechanism by directing airflow towards the middle section of the blade, thereby creating a compression effect and blocking any pressure from escaping. This reduces the blade`s noise and vibration, creating a perfect balance between power and sound.Anti-Vibration Mounting SystemIn-mold injection anti-vibration rubber pads provide hassle-free usage for 80% protection coverage, including all four corners.Riing 12 LED RGB 256 Colors Fans are available in single fan and three fan packs allowing you to choose what best suits your build.The Riing Fan Series is also available in single color LED versions including: Yellow, Orange, Green, White, Red and Blue allowing user to custom fit their chassis color theme with ease.