Silent Wings 4 , 140 mm , Type Fan , Suitable location Computer case , Rotational speed (max) 1900 RPM , Noise level (high speed) 29.3 dB , Maximum airflow 78.4 cfm , Airflow 133.2 m³/h , Pulse-width modulation (PWM) support Yes , Bearing type Fluid Dynamic Bearing (FDB) , Colour Black , Fan connector 4-pin , Power consumption (typical) 4.8 W , Rated current 0.4 A , Weight 220 g