Premium quiet fan, 200x200x30 mm, 12V, 3-pin Molex, 800/550 RPM, max. 18.1 dB(A), >150,000 h MTTF Award-winning A-series design with Flow Acceleration Channels and Advanced Acoustic Optimisation frame for superior quiet cooling performance Large 200mm diameter for high airflow performance at extremely low noise levels, three sets of mounting holes (154x154, 170x170 & 110x180mm) 3-pin FLX version provides 800/550rpm speed settings via Low-Noise Adaptor to fine-tune the fan for maximum airflow or near-silent operation Includes anti-vibration mounts, fan screws, extension cable and 3:4-pin adaptor for powering the fan directly from the power supply