Long operating time The hydrodynamic slide bearing is equipped with an oil capsule to avoid any loss of lubricant. This makes the bearing as quiet as a slide bearing but with a significantly longer operating life. Perfect fan regulation through the PWM The PWM-function indicates exactly the speed at which the fan must run via the motherboard. This guarantees maximum cooling performance at minimum noise levels. PWM Sharing Technology (PST) reduces noise levels If you want to improve the efficiency of your cooling in the PC, you can also connect several chassis fans in parallel (only 10 fans or more makes the noise twice as loud). But how does it help you if they don't work together? The PST function ensures that all chassis fans are working on one signal. For example, you share your CPU cooler PWM signal, ensuring that your chassis fans only speed up and slow down when necessary.