Software Controlled Functions (LED/RPM/Lighting Features) Patented Circular LED Ring 30 Separate RGB LEDs with 16.8 million color RGB spectrum 21 LED Modes: Multiple Lighting Modes (v1.2.1) Link Cable included (Allows multiple Controller Linking) PWM Function provides automatic speed adjustment Designed for Case/Radiator Applications Extended Cable Length Hydraulic Bearing for Low noise/Longer Lifespan Real-time Fan Warning Alert