RGB LED PWM Fans with wired controller for computers, CPU coolers, liquid coolers, and radiators. 49 PCS RGB LEDs create 18 multi-directional lighting effects such as waves, rainfall, rainbows, and other RGB spectrums. Three programming control buttons allow you to change the light speed, mode, and color brightness. Fan blades are designed for high airflow and minimal noise. Superior Spectrum with up to an 80% Penetration Rate.