HIGH STATIC PRESSURE: Efficient even with resistance the generated airflow easily penetrates dense radiators, narrow perforated panels and mesh structures and ensures reliable cooling PWM CONTROL WITH WIDE SPEED RANGE: The speed can be progressively adjusted up to 2500 rpm via the 4-pin PWM connection the fan stops completely at less than 5% PWM PRECISE MANUFACTURING FOR MAXIMUM SMOOTH RUNNING: Minimal gaps, automatic balancing and high-precision measurement noticeably reduce vibrations for quiet, efficient and long-lasting perfor SMOOTH-RUNNING FLUID DYNAMIC BEARING (FDB): The self-lubricating bearing minimizes noise during operation ideal for quiet, efficient cooling and a long, reliable service life NEW FAN BLADE DESIGN FOR MORE PERFORMANCE: The redesigned rotor blades offer an optimal balance of performance and low noise especially efficient at low speeds