Ultra low noise fan, 120x120x25mm, 12V, 3-pin Molex, 700 RPM, 6.8 dB(A), >150,000 h MTTF Renowned NF-S12B high-end 120x25mm 12V fan, more than 100 awards and recommendations from international computer hardware websites and magazines, hundreds of thousands of satisfied users Airflow-optimised blade design with high CFM and outstanding quietness of operation, ideal for low-noise case cooling, chassis ventilation and other applications with low airflow resistance Low-speed ultra-quiet 700rpm 3-pin version for demanding silent enthusiasts, virtually inaudible with optional NA-SRC10 Low-Noise Adaptors or at reduced voltage Streamlined redux edition: proven Noctua quality at an attractive price point, wide range of optional accessories (anti-vibration mounts, S-ATA adaptors, y-splitters, extension cables, etc.)