Optimized fan blades for the highest performance on radiators and heat sinks. Speed switch allows changing maximum PWM speed between medium-speed, high-speed and ultra-high-speed (up to 2400 rpm). Small tip clearance and a fan frame with a funnel-shaped air outlet for extremely high air pressure. Virtually inaudible operation at regular speed. 6-pole fan motor for less vibration and power consumption. Fluid-dynamic bearing enables very smooth operation. Individual and easy mounting systems for use as a case fan or with a radiator. Super-long life-span of up to 300,000h. Valuable sleeved PWM cable and easy to install PWM connector. Elegant look with high-grade fan sticker in an all-black design. Legendary silence, epic performance and features. For the highest performance, optimized fan blades, especially for heat sinks designed radiator corners and a speed switch with 3 selectable speed options, Silent Wings Pro 4 140mm PWM is the most progressive, performant, and versatile fan by be quiet!. Performance. Suitable location. Computer case. Type. Fan. Fan diameter. 14 cm. Rotational speed (max). 2400 RPM. Noise level (high speed). 36.8 dB. Maximum airflow. 97.41 cfm. Airflow. 165.5 m³/h. Maximum air pressure. 3.64 mmH2O. Pulse-width modulation (PWM) support. Yes. Bearing type. Fluid Dynamic Bearing (FDB). Quantity per pack. 1 pc(s). Mean time between failures (MTBF). 300000 h. Design. Product colour. Black. Number of fans. 1 fan(s). Illumination LED. No. Fan connector. 4-pin. Display type. Not applicable. Certification. CE / ROHS / RU / UKCA / TÜV / WEEE. Power. Power consumption (typical). 6 W. Voltage. 7 - 13.2 V. Rated voltage. 12 V. Maximum current. 0.5 A. Rated current. 0.5 A. Weight & dimensions. Width. 140 mm. Depth. 140 mm. Height. 25 mm. Weight. 258 g. Fan dimensions (W x D x H). 140 x 140 x 25 mm. Cable length. 0.5 m. Package width. 156 mm. Package depth. 206.5 mm. Package height. 31 mm. Package weight. 448 g. Packaging content. Screws included. Yes. Number o

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