Premium quiet fan, 92x92x14mm, 12V, 4-pin PWM, max. 2500 RPM, max. 23.6 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 HS-PWM version for automatic speed control via 4-pin PWM fan headers, broad 500-2500rpm speed range, stops at 0% PWM for semi-passive systems chromax. black. swap edition with all-black design and self-adhesive red, black, white, blue, yellow and green anti-vibration pads for colour-customising (8 pads of each colour)