40-80 mm.

• Premium quiet fan, 40x40x20 mm, 5V, 4-pin PWM, max. 5000 RPM, max. 14.9 dB(A), >150,000 h MTTF

• Please Note:

  Being a 5V fan, the NF-A4x20 5V PWM cannot be run at 12V and will be damaged when used with typical 12V power sources such as PC motherboard fan headers.

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• Premium quiet fan, 40x40x10 mm, 5V, 4-pin PWM, max. 5000 RPM, max. 19.6 dB(A), >150,000 h MTTF
• Award-winning 40x10mm A-series fan with Flow Acceleration Channels and Advanced Acoustic Optimisation frame for superior quiet cooling performance
• 5V 4-pin PWM version (5000rpm maximum speed) with polarity protection for 5V applications with PWM speed control
• USB power adaptor cable allows the fan to run on devices with USB host ports, power banks or USB power supplies such as those used by smartphones
• Includes anti-vibration mounts, fan screws, extension cable and OmniJoin adaptor set for connecting the fan to proprietary fan headers

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• Premium quiet fan, 80x80x25mm, 12V, 4-pin PWM, max. 2200 RPM, max. 17.7 dB(A), >150,000 h MTTF
• Award-winning 80x25mm A-series fan with Flow Acceleration Channels and Advanced Acoustic Optimisation frame for superior quiet cooling performance
• 8cm format is ideal for compact PC cases (HTPC, ITX, Small Form Factor) and other chassis (intake & exhaust), replacement fan for NAS and other devices, etc.
• 4-pin PWM version for automatic speed control via 4-pin PWM fan headers, broad 450-2200rpm speed range, stops at 0% PWM for semi-passive systems
• chromax.black.swap edition with all-black design and swappable red, black, white, blue, yellow and green anti-vibration pads for colour-customising (4 pads of each colour)

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• Premium quiet fan, 40x40x10 mm, 12V, 4-pin PWM, max. 5000 RPM, max. 12.9 dB(A), >150,000 h MTTF
• Award-winning 40x10mm A-series fan with Flow Acceleration Channels and Advanced Acoustic Optimisation frame for superior quiet cooling performance
• Ideal replacement for noisy or broken 12V 4cm fans in 3D printers, DVRs, NAS, switches, routers, other network and storage devices, etc.
• 4-pin PWM version for automatic speed control via 4-pin PWM fan headers, broad 1000-5000rpm speed range (3700rpm max. with supplied Low-Noise Adaptor)
• Includes anti-vibration mounts, fan screws, Low-Noise Adaptor, extension cable and OmniJoin adaptor set for connecting the fan to proprietary fan headers

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