Cooler master silencio fp 120 pwm case fan no led the latest cooler master silencio fp series introduces all new features to the 120mm cooling fan offerings thanks to its loop dynamic bearing ldb the life expectancy is pushed up to an incredible 160 000 hours silencio fprsquos exclusive driver ic assists in making the fan produce ultra low vibrations and noise while saving more power with very low energy requirements its smart fan engine prevents damage with fan jam detection and prot