Long Life Bearing (EBR) Long Life Bearing applied, minimizing noise and inflow of the dust For longer life cycle. Shark fin blade design Optimized for maximum airflow, Shark`s Fin blade greatly reduces the turbulence caused by fan rotation, thus decreasing the noise and vibration while increasing the airflow. Minimized noise and vibration Minimized noise and vibration through lowest rpm. Suitable for silent system environment. Silicone pin provided Silicone pin absorbs the vibration between the fan and the case allowing a quiet work environment.