---
product_id: 71150027
title: "Noctua NF-A4x10 5V PWM, Premium Quiet Fan with USB Power Adaptor Cable, 4-Pin, 5V Version (40x10mm, Brown)"
brand: "noctua"
price: "$36.68"
currency: USD
in_stock: true
reviews_count: 13
category: "Noctua"
url: https://www.desertcart.us/products/71150027-noctua-nf-a4x10-5v-pwm-premium-quiet-fan-with-usb
store_origin: US
region: United States of America
---

# 5V USB-powered for versatile plug & play Ultra-quiet 19.6 dB(A) noise level 5000 RPM max speed for efficient airflow Noctua NF-A4x10 5V PWM, Premium Quiet Fan with USB Power Adaptor Cable, 4-Pin, 5V Version (40x10mm, Brown)

**Brand:** noctua
**Price:** $36.68
**Availability:** ✅ In Stock

## Summary

> 🌬️ Stay cool, stay ahead — the silent fan your setup deserves!

## Quick Answers

- **What is this?** Noctua NF-A4x10 5V PWM, Premium Quiet Fan with USB Power Adaptor Cable, 4-Pin, 5V Version (40x10mm, Brown) by noctua
- **How much does it cost?** $36.68 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/71150027-noctua-nf-a4x10-5v-pwm-premium-quiet-fan-with-usb)

## Best For

- noctua enthusiasts

## Why This Product

- Trusted noctua brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Compact Powerhouse:** Small 40x40x10mm size delivers impressive airflow (8.9 m³/h) without bulk, perfect for tight setups.
- • **Whisper-Quiet Cooling:** Experience premium silence with advanced acoustic optimization that keeps your workspace distraction-free.
- • **Durability Meets Design:** Built with fibre-glass reinforced PBT and backed by a 6-year warranty for long-lasting, reliable performance.
- • **Vibration-Free Mounting:** Includes anti-vibration mounts and OmniJoin adaptor set for seamless, secure installation and reduced noise.
- • **Universal USB Compatibility:** Plug & play with included USB adaptor cable—cool your devices anywhere, from desktops to power banks.

## Overview

The Noctua NF-A4x10 5V PWM is a premium, ultra-quiet 40x40x10mm fan designed for efficient cooling with a max speed of 5000 RPM and noise level under 20 dB(A). Powered via 5V USB or 4-pin PWM, it offers versatile compatibility and includes anti-vibration mounts plus a 6-year warranty, making it the go-to choice for professionals seeking silent, reliable airflow in compact spaces.

## Description

Product description Featuring advanced aerodynamic design measures such as Flow Acceleration Channels and an AAO frame, the NF-A4x10 5V PWM is a PWM enabled 5V variant of Noctua’s award-winning, premium quality quiet 40x10mm fan. The custom designed NE-FD3 PWM IC that integrates Smooth Commutation Drive technology and Noctua’s reference class SSO2 bearings assure superb running smoothness and excellent long-term stability. Topped off with modular cabling and the OmniJoin Adaptor Set Adaptor Set, the NF-A4x10 5V PWM is a premium choice for demanding 5V applications that require PWM control. 5V PWM version Many devices such as network or storage solutions use 5 volt 40mm fans with PWM speed control. With the same operating voltage, PWM support and the included OmniJoin adaptor set that makes it compatible with proprietary fan headers, the NF-A4x10 5V PWM is ideal for replacing noisy or broken 5V 40mm fans with PWM. Please Note: Being a 5V fan, the NF-A4x10 5V PWM cannot be run at 12V and will be damaged when used with typical 12V power sources such as PC motherboard fan headers. Flow Acceleration Channels The NF-A4x10 impeller features suction side Flow Acceleration Channels. By speeding up the airflow at the crucial outer blade regions, this measure reduces suction side flow separation and thus leads to better efficiency and lower vortex noise. SSO2 Bearing The NF-A4x10 features the further optimised second generation of Noctua's renowned, time-tested SSO bearing. With SSO2, the rear magnet is placed closer to the axis to provide even better stabilisation, precision and durability. Reduced motor hub size Thanks to its streamlined, compact motor design, the NF-A4x10's motor hub is smaller than with conventional 4cm fans. This allows for more blade surface area and thus contributes to the NF-A4x10's superior airflow and pressure performance. USB power adaptor cable The fan includes a USB power adaptor cable that allows it to run on power banks, devices with USB host ports or USB power supplies such as those used for smartphones. Please Note Being a 5V fan, the NF-A4x10 5V PWM cannot be run at 12V and will be damaged when used with typical 12V power sources such as PC motherboard fan headers.

Review: Well Worth the Money Spent - Noctua NF-A4x10 5v PWM Fan In my opinion, these fans live up to their premium quality advertisement. Build quality is excellent, noise is very minimal, and the 40 millimeter depth allows for extra airflow. You may not enjoy the color but I'm confident you will enjoy the quality and performance. Used to cool to steering wheel pedal sets they perform quite well and are nearly silent. Cooling is very efficient. These can be mounted with screws or with the included rubber grommets. Please bear in mind these are for 5 volt current not 12 volt. They will work with both PWM or direct voltage applications
Review: Noctua makes the BEST fans!! - I've used Noctua fans in several home-build computers. Great quality and whisper quiet. This Noctua NF-A4x10 5V PWM comes with mounting hardware and USB adapter cable. Plug it in to any USB-A power source and it's on. Compact and quiet. Small size does not provide huge airflow. Yet perfect for quietly cooling small electronics. I have it on top of our cable modem which gets very hot without a fan.

## Features

- 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

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07DXS86G7 |
| Air Flow Capacity | 8.9 Cubic Meters Per Hour |
| Best Sellers Rank | #82 in Computer Case Fans |
| Brand | Noctua |
| Brand Name | Noctua |
| Compatible Devices | Desktop |
| Cooling Method | Air |
| Customer Reviews | 4.8 out of 5 stars 1,109 Reviews |
| Included Components | NOCTUA NF A4X10 5V PWM Valve Charger 4 cm Marroon |
| Item Dimensions L x W x H | 1.57"L x 1.57"W x 0.39"H |
| Item Weight | 80 Grams |
| Manufacturer | Noctua |
| Material Type | Fibre-glass reinforced PBT |
| Maximum Rotational Speed | 5000 RPM |
| Model | NF-A4X10 5V PWM |
| Noise Level | 19.6 Decibels |
| Number of Items | 1 |
| Part Number | NF-A4X10 5V PWM |
| Power Connector Type | 4-Pin |
| Product Dimensions | 1.57"L x 1.57"W x 0.39"H |
| UPC | 841501110320 |
| Unit Count | 1.0 Count |
| Voltage | 5 Volts |
| Warranty Description | 6 year manufacturer’s warranty |

## Product Details

- **Air Flow Capacity:** 8.9 Cubic Meters Per Hour
- **Brand:** Noctua
- **Compatible Devices:** Desktop
- **Cooling Method:** Air
- **Material:** Fibre-glass reinforced PBT
- **Maximum Rotational Speed:** 5000 RPM
- **Noise Level:** 19.6 Decibels
- **Power Connector Type:** 4-Pin
- **Product Dimensions:** 1.57"L x 1.57"W x 0.39"H
- **Voltage:** 5 Volts

## Images

![Noctua NF-A4x10 5V PWM, Premium Quiet Fan with USB Power Adaptor Cable, 4-Pin, 5V Version (40x10mm, Brown) - Image 1](https://m.media-amazon.com/images/I/81ud+v9ghlL.jpg)
![Noctua NF-A4x10 5V PWM, Premium Quiet Fan with USB Power Adaptor Cable, 4-Pin, 5V Version (40x10mm, Brown) - Image 2](https://m.media-amazon.com/images/I/81jxOZS8HFL.jpg)
![Noctua NF-A4x10 5V PWM, Premium Quiet Fan with USB Power Adaptor Cable, 4-Pin, 5V Version (40x10mm, Brown) - Image 3](https://m.media-amazon.com/images/I/817F+fKcp5L.jpg)
![Noctua NF-A4x10 5V PWM, Premium Quiet Fan with USB Power Adaptor Cable, 4-Pin, 5V Version (40x10mm, Brown) - Image 4](https://m.media-amazon.com/images/I/81AWklDfROL.jpg)
![Noctua NF-A4x10 5V PWM, Premium Quiet Fan with USB Power Adaptor Cable, 4-Pin, 5V Version (40x10mm, Brown) - Image 5](https://m.media-amazon.com/images/I/91q4VBG-wuL.jpg)

## Available Options

This product comes in different **Size** options.

## Questions & Answers

**Q: I need to control the speed using arduino (the arduino has a 500 hz pwm frecuency) can this fan handle this frequency for pwm or what it is?**
A: You can change the PWM to FAST PWM for these applications on Arduino. Googalize "25k PWM Arduino code". The real issue is trying to find data specs on the PWM IC that Noctua uses. Googalize "Noctua PWM white paper" and you'll get all the info you need on their PWM specs. Target frequency is 25kHz but the acceptable range is 21kHz to 28kHz. GOOD LUCK.

**Q: Is there a 5vdc pwm temperature controller for this fan? been searching, but can't find.**
A: No its controlled by the motherboard.  I threw away the usb adapter cable, If it was used to power the fan, since usb is 5v, I would expect it to run at full speed.  I used my fan on an NVIDIA NANO Single board computer

**Q: how long is the cable, from the fan all the way to the usb connector?  i want to put this in a small area, so looking for one with a very short cable**
A: 40cm.

**Q: is there a usb version of the noctua 40x20 5v fan**
A: No, there is no USB specific version available. But the kit does include a USB Type A to 4-pin female adapter cable.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Well Worth the Money Spent
*by F***A on November 2, 2025*

Noctua NF-A4x10 5v PWM Fan In my opinion, these fans live up to their premium quality advertisement. Build quality is excellent, noise is very minimal, and the 40 millimeter depth allows for extra airflow. You may not enjoy the color but I'm confident you will enjoy the quality and performance. Used to cool to steering wheel pedal sets they perform quite well and are nearly silent. Cooling is very efficient. These can be mounted with screws or with the included rubber grommets. Please bear in mind these are for 5 volt current not 12 volt. They will work with both PWM or direct voltage applications

### ⭐⭐⭐⭐⭐ Noctua makes the BEST fans!!
*by B***M on December 28, 2025*

I've used Noctua fans in several home-build computers. Great quality and whisper quiet. This Noctua NF-A4x10 5V PWM comes with mounting hardware and USB adapter cable. Plug it in to any USB-A power source and it's on. Compact and quiet. Small size does not provide huge airflow. Yet perfect for quietly cooling small electronics. I have it on top of our cable modem which gets very hot without a fan.

### ⭐⭐⭐⭐⭐ Great for keeping any small hot item cooled.
*by M***E on October 6, 2025*

Worked extremely well for my usecase of keeping an NVME SSD cooled. The fan is extremely quiet, and I love the classic Noctua colors. It puts out a LOT more air than you'd think for a fan this quiet. Since installing it, the heavily used nvme SSD's temps have gone from therrmal throttling at 85c almost all the time, to a cool and comfy 35c. I simply drilled a hole in the top cover of my mini PC and attached the fan. Boom no more thermal throttling. It's perfect.

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-05-21*