16.8 Million Colour 2-LED Ring Design Featuring 2 independent rings and 9 addressable LEDs on each ring, the Pure Duo fan gives great light coverage, uniform colour and brightness. The built-in LED ring can light up your build with 16.8 million colours. PWM Controlled Fan with 9 Fan Blade Design PWM controlled fan with an unique 9 blade design is engineered to generate higher airflow whilst keeping quiet. The Pure Duo fans ensure more efficient cooling performance under intense operation. Hydraulic Bearing with Low-Noise Design The hydraulic bearing self-lubricates with a high-quality, friction-reducing substance, which lowers operation noise while improving thermal efficiency. The seal cap prevents lubricant leakage and extends the lifespan of the unit. Anti-Vibration Mounting System The In-mould injection anti-vibration rubber pads dampen the vibration of the fan allowing the fan to spin at higher levels without compromising noise levels. The fan is designed with 80% coverage for all corners, maintaining low noise levels when in operation. Simply Switch LED Modes with the Preset Controller The controller comprises of 7 preset lighting modes: wave, full light, RGB spectrum, flow, ripple, pulse and blink modes, which are easy to switch even without the 5V addressable RGB header on your motherboard. Not only can users switch modes, but switch colours and lighting speeds intuitively. *The maximum signal output for one controller is 90 addressable LEDs. Sync with Motherboard RGB Software Designed to synchronise with ASUS Aura Sync, GIGABYTE RGB Fusion, MSI Mystic Light Sync and ASRock Polychrome. It supports motherboards that have a 5V addressable RGB header, allowing you to control the lights directly from the above-mentioned software without installing any extra lighting software or controllers. For more details, please visit ASUS, GIGABYTE, MSI and ASRock official websites. Please note: The motherboard signal connector only supports 5V header. Features 16.8 Million Color 2-LED Ring Design. PWM Controlled Fan with 9 Fan Blade Design. Hydraulic Bearing with Low-Noise Design. Anti-Vibration Mounting System. Simply Switch LED Modes with the Preset Controller. Sync with Motherboard RGB Software.