Premium quiet fan, 92x92x14 mm, 12V, 4-pin PWM, max. 2200 RPM, max. 19.9 dB(A), >150,000 h MTTF Award-winning 92x14mm A-series fan with Flow Acceleration Channels and Advanced Acoustic Optimisation frame for superior quiet cooling performance 14mm slim design is ideal for low-profile 9cm CPU coolers (e.g. Noctua NH-L9 series), compact PC cases and other space-restricted applications 4-pin PWM version for automatic speed control via 4-pin PWM fan headers, broad 500-2200rpm speed range (1700rpm max. with supplied Low-Noise Adaptor) Includes anti-vibration mounts, fan screws, Low-Noise Adaptor, extension cable and y-cable for running two PWM fans on the same header