Noctua NF-A4x20 5V PWM Fan 40mm
Noctua NF-A4x20 5V PWM Fan 40mm, photo 2
Noctua NF-A4x20 5V PWM Fan 40mm, photo 3
Noctua NF-A4x20 5V PWM Fan 40mm, photo 4
Noctua NF-A4x20 5V PWM Fan 40mm, photo 5
Noctua NF-A4x20 5V PWM Fan 40mm, photo 6
Noctua NF-A4x20 5V PWM Fan 40mm, photo 7
Noctua

Noctua NF-A4x20 5V PWM Fan 40mm

SKU HC-229058MPN NF-A4x20 5V PWM

  • 40 mm
  • 4 Pin (PWM)

Highlights

  • 40x20mm frame with 5V 4-pin PWM control
  • Flow Acceleration Channels and AAO frame
  • Speed range 1100 to 5000 RPM
  • Max airflow 9.4 m³/h at 14.9 dB(A)
  • SSO2 bearing with Smooth Commutation Drive
  • Modular cables and OmniJoin adaptor set included

Key specs

Size
40 mm
Fans in pack
1
Connector
4 Pin (PWM)
RGB lighting
No
Color
Beige
Max. Fan RPM
5000 rpm
All specifications
$13.99
  • ≈ 0.0001832 BTC
  • ≈ 0.006177 ETH
  • ≈ 14.01 USDT

In stock Ships by Tue, Nov 10 when paid today.

  • Delivery to the United States: $39.90 DHL Express Worldwide · arrives Wed, Nov 11 – Mon, Nov 16 if paid today
  • Rate locked at checkout Up to 60 min to send BTC, 30 min for ETH and USDT
  • New, sealed and genuine Manufacturer warranty: 6 years
  • 30-day returns Unused items in original packaging
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Overview

A 40x20mm 5V PWM fan built for quiet, controlled cooling in compact devices. It suits small form factor PCs, embedded systems, and 5V header applications.

Design and Build

The fan uses a beige and brown 40x20mm frame with Flow Acceleration Channels and an AAO structure for aerodynamic efficiency. Noctua's SSO2 bearing and custom NE-FD3 PWM IC with Smooth Commutation Drive ensure smooth, stable operation over time.

Performance

Speed ranges from 1100 to 5000 RPM via 5V PWM control. Maximum airflow reaches 9.4 m³/h while noise stays at 14.9 dB(A). The 5V input makes it compatible with headers that cannot supply 12V.

Connectivity and Accessories

A standard 4-pin PWM connector provides speed control and monitoring. The package includes modular cabling and the OmniJoin adaptor set for flexible installation in tight spaces.

NF-A4x20 5V PWM Fan 40mm specifications

General
BrandNoctua
Manufacturer part no.NF-A4x20 5V PWM
EAN9010018100136
Warranty6 years (manufacturer)
Fan Specifications
Fan Size40 mm
Fan mounting size40 mm
Max. Fan RPM5000 rpm
Max. Single Fan Airflow9.4 m³/h
Noise
Max. Single Fan Noise14.9 dB(A)
Internal Ports
Fan connectors4 Pin (PWM)
Lighting
Lighting / RGBNo
Color
Primary ColorBeige
Secondary ColorBrown
Dimensions
Fan height20 mm

Specifications come from the manufacturer and can change without notice. Check the box contents and compatibility before ordering; our team answers questions within one business day.

Shipping & returns

Delivery to the United States: $39.90DHL Express Worldwide · arrives Wed, Nov 11 – Mon, Nov 16 if paid today

Ships from our warehouse in Germany: in stock, it leaves within 1–2 business days, tracked to the door.
ToBusiness daysThis item
GermanyDHL Paket1–2$5.90
Other EU countriesDHL Parcel International2–8$11.90–$15.90
UK, Switzerland and NorwayDHL Parcel International3–7$24.90
United States and CanadaDHL Express Worldwide2–5$39.90
Asia and the Middle EastDHL Express Worldwide2–5$49.90
Australia and New ZealandDHL Express Worldwide3–6$59.90
  • Discreet packaging Plain, unbranded box — no crypto or brand references outside
  • Returns 30 days for unused items in original packaging; faulty items are on us
Rates and delivery times by country

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