---
product_id: 367776742
title: "Noctua NF-A4x20 5V, 3-Pin Premium Quiet Fan (40mm, Brown)"
brand: "noctua"
price: "€ 57.08"
currency: EUR
in_stock: true
url: https://www.desertcart.ie/products/367776742-noctua-nf-a4x20-5v-3-pin-premium-quiet-fan-40mm
store_origin: IE
region: Ireland
---

# >150,000 h MTTF for long-lasting reliability 5000 RPM high-speed airflow Ultra-quiet 14.9 dB(A) noise level Noctua NF-A4x20 5V, 3-Pin Premium Quiet Fan (40mm, Brown)

**Brand:** noctua
**Price:** € 57.08
**Availability:** ✅ In Stock

## Summary

> 🛠️ Small Fan, Big Impact — Quiet Cooling That Means Business

## Quick Answers

- **What is this?** Noctua NF-A4x20 5V, 3-Pin Premium Quiet Fan (40mm, Brown) by noctua
- **How much does it cost?** € 57.08 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ie](https://www.desertcart.ie/products/367776742-noctua-nf-a4x20-5v-3-pin-premium-quiet-fan-40mm)

## 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

- • **Built to Last:** Over 150,000 hours mean-time-to-failure ensures your system stays cool season after season.
- • **Whisper-Quiet Power:** Experience premium cooling with barely-there noise at just 14.9 dB(A).
- • **Turbocharged Airflow:** Spin up to 5000 RPM for efficient heat dissipation in demanding 5V applications.
- • **Compact Precision Fit:** 40x40x20 mm size engineered for tight 1U spaces and specialized devices.
- • **Plug & Play Versatility:** Includes anti-vibration mounts, extension cables, and OmniJoin adaptors for seamless integration.

## Overview

The Noctua NF-A4x20 5V is a premium 40x40x20 mm quiet fan designed for 5V industrial and network equipment. Featuring advanced aerodynamic design, ultra-quiet operation at 14.9 dB(A), and a robust 5000 RPM speed, it delivers efficient cooling with exceptional longevity (>150,000 hours MTTF). Its modular cabling and included accessories ensure easy installation in compact, noise-sensitive environments.

## Description

Featuring advanced aerodynamic design measures such as Flow Acceleration Channels and Noctua’s AAO frame, the NF-A4x20 5V is a dedicated 5V version of Noctua’s highly optimised, premium quality quiet 40x20mm fan. Smooth Commutation Drive technology and Noctua’s reference class SSO2 bearings guarantee superb running smoothness and excellent long-term stability. Topped off with modular cabling, the OmniJoin Adaptor Set and 6 years manufacturer’s warranty, the NF-A4x20 5V is a premium choice for demanding 5V applications. Please note: Being a 5V fan, the NF-A4x20 5V cannot be run at 12V and will be damaged when used with typical 12V power sources such as PC motherboard fan headers.

## Features

- Premium quiet fan, 40x40x20 mm, 5V, 3-pin Molex, 5000 RPM, 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 applications or replacing fans in network and storage equipment (routers, switches, NAS etc.) or other devices such as DVRs
- 5V 3-pin version (5000rpm) for 5V-based industrial applications or replacing 5V fans in various devices
- 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 | B072Q3CMRW |
| Are batteries included? | No |
| Auto Focus Included | No |
| Best Sellers Rank | #228,369 in Computers & Accessories ( See Top 100 in Computers & Accessories ) #1,092 in Case Fans |
| Brand | Noctua |
| Colour | Brown |
| Compatible Devices | Desktop |
| Cooling Method | Air |
| Country of Origin | USA |
| Customer Reviews | 4.7 4.7 out of 5 stars (371) |
| Date First Available | 1 August 2017 |
| Importer | Noctua - Rascom Computerdistribution Ges |
| Item Weight | 68 g |
| Item model number | NF-A4x20 5V |
| Manufacturer | Noctua |
| Material | Fibre-glass reinforced PBT |
| Maximum Rotational Speed | 5000 RPM |
| Model number | NF-A4x20 5V |
| Net Quantity | 1.0 Count |
| Noise Level | 14.9 Decibels |
| Number of Items | 1 |
| Packer | VERGEEENO - C/o PC PARTS AND SOLUTIONS, BANGALORE (email Support : pcpartpick.amazon@gmail.com) |
| Power Connector Type | 3-Pin |
| Product Dimensions | 40L x 40W x 20H Millimeters |
| UPC | 841500110123 |
| Voltage | 5 Volts |

## Product Details

- **Brand:** Noctua
- **Cooling Method:** Air
- **Power Connector Type:** 3-Pin
- **Product Dimensions:** 40L x 40W x 20H Millimeters
- **Voltage:** 5 Volts

## Images

![Noctua NF-A4x20 5V, 3-Pin Premium Quiet Fan (40mm, Brown) - Image 1](https://m.media-amazon.com/images/I/71lyRpVR4OL.jpg)
![Noctua NF-A4x20 5V, 3-Pin Premium Quiet Fan (40mm, Brown) - Image 2](https://m.media-amazon.com/images/I/71tPkk5TaXL.jpg)
![Noctua NF-A4x20 5V, 3-Pin Premium Quiet Fan (40mm, Brown) - Image 3](https://m.media-amazon.com/images/I/81trIc57WdL.jpg)
![Noctua NF-A4x20 5V, 3-Pin Premium Quiet Fan (40mm, Brown) - Image 4](https://m.media-amazon.com/images/I/71+IJ7qyW-L.jpg)
![Noctua NF-A4x20 5V, 3-Pin Premium Quiet Fan (40mm, Brown) - Image 5](https://m.media-amazon.com/images/I/71G5+G0k2+L.jpg)

## Available Options

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

## Frequently Bought Together

- Noctua NF-A4x20 5V, Premium Quiet Fan, 3-Pin, 5V Version (40x20mm, Brown)
- Noctua NF-A4x10 5V, Premium Quiet Fan, 3-Pin, 5V Version (40x10mm, Brown)
- OPSFALCON 2 Pack USB to 3-Pin / 4-Pin PWM 5V USB Sleeved Fan Power Adapter Cable, USB to 3 Pin / 4 Pin Case Fan Adapter Connector Cable (USB-3Pin/4Pin Cable)

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.ie/products/367776742-noctua-nf-a4x20-5v-3-pin-premium-quiet-fan-40mm](https://www.desertcart.ie/products/367776742-noctua-nf-a4x20-5v-3-pin-premium-quiet-fan-40mm)

---

*Product available on Desertcart Ireland*
*Store origin: IE*
*Last updated: 2026-03-05*