Patented circular RGB LED ring with 256 unique colors. Hydraulic Bearing/Low-Noise design lowers operating noise and improves efficiency. The Low-Noise cable can reduce the noise level by 20% from 24.9dBA to 19.8dBA. Ring RGB software & mobile app offer the most convenient method for adjusting the fan speeds and the fan colors for up to 48 ring RGB fans with up to 16 controllers.