Product Specification

General

Brand : Noctua

Model : NF-A4x20 PWM

Warranty : 6 years

Part Number : NF-A4x20 PWM

Technical Specification

Airflow : 4.89 to 5.53 CFM

Fan RPM : 1200 to 5000 RPM

Noise Level : 12.2 to 14.9 dBA

Color : Brown

Noctua NF-A4x20 PWM, Premium Quiet Fan, 4-Pin

(516 Total Review)

Product Features

Premium quiet fan, 40x40x20 mm, 12V, 4-pin PWM, max. 5000 RPM, max. 14.9 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
40x20mm size ideal for 1U servers or replacing fans in network and storage equipment (routers, switches, NAS etc.) or other devices such as DVRs
4-pin PWM version for automatic speed control via 4-pin PWM fan headers, 5000rpm maximum speed (4400rpm with supplied Low-Noise Adaptor)
Includes anti-vibration mounts, fan screws, extension cable and OmniJoin adaptor set for connecting the fan to proprietary fan headers

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Amazon

In Stock · Last Price Checked At: Oct 24, 2026

$15.95

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