16.8 Million Colour 2-LED Ring Design Featuring 2 independent rings & 9 addressable LEDs on each ring, the Pure Duo fan gives great light coverage, uniform colour & 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 & 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 & 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 & 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 & 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 & 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.