Gentle Typhoon 120x120x25mm 2150 RPM PWM fan #D1225C12B6ZPA-64 The Gentle Typhoon 120 mm fan series produce especially high static pressure combined with optimized fan blade design. They are fitted with double ball bearing and boast a life span of up to 100,000 hours at 35°C. To further reduce noise, a newly developed motor with drive train, disposing a special double vibration reduction structure, is deployed. Added dampening rings further reduce vibrations effectively. High Performance The Gentle Typhoon achieves high airflow volume and low noise with the newly designed impeller, enabling silent cooling of the latest devices which run very hot. Silent Operation The Gentle Typhoon has a different type of tone. The fan propeller is designed to reduce the disturbing frequency fan noise to human ears. Innovative Technology The newly designed motor and motor support mechanism of the Gentle Typhoon uses a double vibration reduction structure. The new support mechanism uses coil dampers to greatly reduce vibration. *Specifications Fan Speed: 900 - 2150 RPM Fan Noise: 15 - 34 dB max Air Flow: 20 - 68 CFM A: 0.13 Voltage: 12V Bearing Type: Double Ball MTBF: 100,000 @35C / 60,000 @60C Connector: 4 Pin PWM This is the OEM version, comes in standard non-retail box, fan only, no accessories.