be quiet! BL046 PURE WINGS 2 120mm Max.1500RPM 51CFM 19dB(A) Cooling Fan Nine silence-optimized fan blades with high airflow capabilities reduce noise-generating turbulences while increasing air pressure Very quiet operation even at maximum speed, with noise of 19.2 dB(A) Perfect choice for Home and Office PCs, Gaming and Multimedia systems Especially recommended for use in water cooling and CPU cooling builds High-quality rifle bearing technology contributes to a very long lifespan of up to 80,000 hours. Connector-3 pin