Based on the award-winning original SWiF design, the new SWiF2 series of high-performance quiet fans takes its successful predecessor proven qualities one step further by adding hydro-dynamic bearing as well as an unique, exciting colour scheme. The new hydro-dynamic bearing ensures whisper quiet operation and even better longevity, which is reflected in an enhanced warranty time of 60 months. Now also available with support for PWM fan speed control, the SWiF2 series provides excellent silent-performance and includes a full range of trusted Coolink quality fans, suitable for all applications inside your system. User can switch the mode between PWM & V.R. (Variable Regulation- To manually control the fan speed) by sliding the switch on PCI bracket.