A true all-purpose fan, offering excellent airflow and outstanding 100,000-hour life expectancy thanks to its LLS (Long Life Sleeve) bearing High-grade LLS bearing with 100,000-hour MTBF delivers long-lasting dependability PWM support offers a wide speed adjustment range for silent operation under lighter loads and maximum airflow during more demanding activity  Counter-balanced magnet reduces axial tension on the bearing, resulting in less wear over time Optimized fan geometry balances airflow with extra emphasis on static pressure for great performance in any usage scenario Aerodynamic stator with embedded wiring helps reduce noise and unwanted turbulence Stator struts sit on a wide angle to the trailing edge of the blades, resulting in a lower noise level and smoother noise profile Strategically placed notches near the fan hub on the trailing edge of the blades help to eliminate the humming noise produced when the blades pass stator struts “Trip wire” technology introduces a micro-turbulent layer that helps to combat elements that negatively affect performance, providing an overall more efficient and quiet fan environment Customized design contributes to a cool running and beautiful looking build A beautiful fan to help your system stay cool, yet quiet Added PWM support offers precise fan control via a wide speed adjustment range of 500 to 1700 RPM allowing users to select their ideal mix of silent operation and maximum airflow. Designed alongside our high-end Venturi Series, the Dynamic X2 incorporates aerodynamic elements of airplane wing designs for significant noise reduction. PWM means maximum airflow and minimal noise PWM support offers a wide 500 to 1700 RPM speed adjustment range for silent operation under lighter loads and maximum airflow during more demanding activity. High-grade LLS bearing with 100,000-hour MTBF delivers long-lasting dependability PWM support offers a wide 500 to 1700 RPM speed adjustment range for silent operation under lighter loads and maximum airflow during more demanding activity Optimized fan geometry balances airflow with extra emphasis on static pressure for great performance in any usage scenario Stator struts sit on a wide angle to the trailing edge of the blades, resulting in a lower noise level and smoother noise profile Strategically placed notches near the fan hub on the trailing edge of the blades help to eliminate the humming noise produced when the blades pass stator struts Specification Type: 14cm Case Fan AMD/Intel: N/A Fan Connector(s): 4-pin Installation: Screws LED Lightin No Colour: Black LED Lightin - Weight: 185 g Fan Dimensions: 140 x 140 x 25 mm Fan Controller: PWM Rotation Speed: 500 - 1700 RPM Fan Bearin Long Life Sleeve bearing Air Flow: 105.9 CFM Noise level: 33.7 dB (A) Power: Input power: 1.7 W Max input current: 0.25 A Input voltage: 12 V Starting voltage: 6 V MTBF: \"100,000 hours\" Package Contents: Dynamic X2 Series fan Screw pack with 4 metal fan screws Package Type: Retail Package Weight: 0.2190 kg Warranty: 2 Years