On sale! (normally $16.01) The SilverStone FW122 is a high quality, standard sized 120mm fan designed for optimal performance with low noise profile. It has custom designed dual fan blades for increased air pressure performance without additional noise. Powered via a PWM 4pin connector, the FW122’s speed can be adjusted by the supported motherboard or fan controller to be used for silent running builds or for cooling a high performance machine.