Description: Gelid Silent9 PWM 92mm Silent FanDesigned for advanced users GELID Silent PWM fans provide additional airflow by using Pulse Width Modulation (PWM) to automatically adjust fan speed according to the CPU load. The fan can be idled down and thus be much quieter. An intelligent IC had been integrated into the fan"s PCB to exploit your mainboard"s BIOS software. This technology is more efficient and convenient than using an external fan controller to adjust the voltage. Each fan impeller has been individually balanced using the latest technology to guarantee steady, unwavering operation. To add to the silence fan mounts replace traditional screws and are made of high quality, temperature resistant, extra long lasting rubber and stop vibrations from the fan motor from travelling into your PC case.Features: Pulse Width Modulation (PWM) Silent Operation w/ Rubber Fan Mounts Optimized Fan Blades High Airflow & High Static Pressure Long Lifetime (50"000 h MTTF at 40°C)Technical Information: Air Flow (CFM):Ω.89Bearing: Hydro Dynamic BearingCable Length (mm):├Connector:^ Pin MolexCurrent (A):Z.18Dimensions (mm):Ϡ x 92 x 25Fan Speed (RPM):⚬-2000Noise Level(dBA):Ώ-23.5Safety Approvals: CE, RoHS CompliantStatic Pressure (mmAq):\Voltage(V):ΐWeight(g):ϐINCLUDED:^ Fan Mounts, Fan Speed Control