UNI FAN P28 is the performance oriented fan, providing high cooling performance, low noise, and balance operation options. With the fan speed controller, users can control fan speed and noise level of Silent(L), Normal(M) or Performance(H) at ease. UNI FAN style daisy-chainable design for ease of cable management. Noise optimized and performance-oriented fan. Optimized for radiator cooling. FDP Bearing with copper shielding to ensure stable rotation of the impeller. Liquid crystal polymer (LCP) made blade to ensure tight tolerance. Control Silent, Normal, Performance mode via included fan speed controller. Additional daisy cable included for daisy-chaining between each cluster.