3 Packs with ARGB Control Hub Class-leading airflow, and low noise levels Advanced fluid dynamic bearing provides up to 250,000 hours of operation. PWM control: ultra-wide RPM range allows optimal cooling for all types of workloads. Anti-vibration pads reduce fan noise by damping rattling and vibration. A double-layer LED array produces deeper color saturation and more lighting effects than conventional RGB fans. Bundled with ARGB hub which can connect up to four fans and features onboard lighting control and Aura Sync support.