Balanced All-Purpose Cooling Performance -- 7-blade optimized impeller design with precision blade tips, curvature, and root grooves delivers stable airflow across multiple scenarios, reaching 63.9 CFM airflow and 3.7 mmHO static pressure at up to 2200 RPM. Durable Reinforced PBT Fan Blades -- Thickened high-strength PBT blades resist shrinkage and deformation, effectively reducing vibration, blade wobble, and resonance during high-speed operation for long-term reliability. Sealed Hydraulic Bearing Design -- Upgraded sealed hydraulic bearing structure minimizes oil leakage, reduces operating noise, and significantly extends fan lifespan, maintaining stable performance under continuous workloads. PWM Intelligent Speed Control -- Supports motherboard PWM control with a wide 5002200 RPM ±10% speed range, automatically adjusting fan speed based on system temperature for efficient cooling and quieter operation. Easy PWM Daisy-Chain Installation -- Built-in PWM male and female connectors all