80 mm PWM PST Case Fan Long Service LifeFeaturing a Fluid Dynamic Bearing that comes with an oil capsule that prevents lubricant leakage, this allows the bearing inside the F12 fan to be as quiet as a sleeve bearing but with a significantly longer service life. Regulation With PWMThe PWM function allows the motherboard to control the fans RPM based upon load; giving you silent acoustics when performing your mundane daily tasks and perfect cooling when you need it. PWM Sharing TechnologyTeamwork makes the dream work, when running multiple fans in parallel The PST technology assures that all of your fans listen to one control signal. E.g. you share the CPU Cooler’s PWM signal and assure that your case fans stand down at low load and spin up whenever necessary. Innovative and Efficient Fan DesignThe innovative design of the fan blades improves the air flow and facilitates highly efficient ventilation. The impeller was designed with a focus on minimising the noise level yet delivering the desired airflow and pressure.