DarkSide Gentle Typhoon Performance Radiator Fan (550-1850rpm) 58cfm - Black Edition PWM High Performance: The GentleTyphoon achieves high airflow volume and low noise with a special 9-blade impeller enabling silent cooling of the latest devices which run very hot. Silent Operation: The GentleTyphoon has a different type of tone. The fan propeller is designed to reduce the disturbing frequency fan noise to human ears. Innovative Technology: The unique motor design and motor support mechanism of the GentleTyphoon uses a custom double vibration reduction structure to greatly reduce vibration. Manufacturer Darkside Overall Dimensions 119 x 119 x 25 mm RPM 550-1850 Air flow 58.3CFM Noise (dB) 26dB (30dB 25cm from the fan, free air) Air pressure 2.03 mmH2O Power Connector 4-Pin PWM Start voltage 12V Voltage 12V Max Current Draw 0.1A (0.44A Peak) Color Black LED None Fan Compatibility 120mm Included 1x Gentle Typhoon Performance Radiator Fan (550-1850rpm) 58cfm - Black Edition PWMDarkSide