---
product_id: 46683114
title: "Noctua NF-A4x20 5V, Premium Quiet Fan, 3-Pin, 5V Version (40x20mm, Brown)"
brand: "noctua"
price: "€ 40.17"
currency: EUR
in_stock: true
category: "Noctua"
url: https://www.desertcart.hr/products/46683114-noctua-nf-a4x20-5v-premium-quiet-fan-3-pin-5v
store_origin: HR
region: Croatia
---

# 150,000+ hours MTTF reliability Ultra-quiet 14.9 dB(A) noise level 5000 RPM high-speed cooling Noctua NF-A4x20 5V, Premium Quiet Fan, 3-Pin, 5V Version (40x20mm, Brown)

**Brand:** noctua
**Price:** € 40.17
**Availability:** ✅ In Stock

## Summary

> 🌬️ Silent cooling that means business – stay cool, stay ahead.

## Quick Answers

- **What is this?** Noctua NF-A4x20 5V, Premium Quiet Fan, 3-Pin, 5V Version (40x20mm, Brown) by noctua
- **How much does it cost?** € 40.17 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/46683114-noctua-nf-a4x20-5v-premium-quiet-fan-3-pin-5v)

## 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 Yet Mighty:** 40x40x20mm size fits perfectly in tight 1U spaces, ideal for routers, NAS, and DVRs – upgrade without compromise.
- • **Whisper-Quiet Powerhouse:** Experience premium airflow at a barely-there 14.9 dB(A) – because your workspace deserves silence.
- • **Award-Winning Aerodynamics:** Flow Acceleration Channels and Acoustic Optimisation frame deliver superior cooling with minimal noise – tech that speaks volumes silently.
- • **Precision 5V 3-Pin Compatibility:** Seamlessly integrates with 5V industrial setups and proprietary fan headers for hassle-free installation.
- • **Complete Installation Kit Included:** Anti-vibration mounts, screws, extension cable, and OmniJoin adaptor set ensure a perfect fit and vibration-free operation.

## Overview

The Noctua NF-A4x20 5V is a premium, ultra-quiet 40x40x20mm fan designed for 5V industrial and compact applications. With a high-speed 5000 RPM motor, noise level as low as 14.9 dB(A), and an exceptional lifespan exceeding 150,000 hours, it offers reliable, whisper-quiet cooling. Its award-winning aerodynamic design and included installation accessories make it the go-to choice for professionals upgrading network, storage, or compact devices.

## Description

Buy Noctua NF-A4x20 5V, Premium Quiet Fan, 3-Pin, 5V Version (40x20mm, Brown): Case Fans - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

## 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 |
| Best Sellers Rank | #561 in Computer Case Fans |
| Brand Name | Noctua |
| Compatible Devices | Desktop |
| Cooling Method | Air |
| Customer Reviews | 4.8 4.8 out of 5 stars (392) |
| Item Dimensions L x W x H | 1.57"L x 1.57"W x 0.79"H |
| Manufacturer | Noctua |
| Material Type | Fibre-glass reinforced PBT |
| Maximum Rotational Speed | 5000 RPM |
| Model | NF-A4x20 5V |
| Noise Level | 14.9 Decibels |
| Number of Items | 1 |
| Part Number | NF-A4x20 5V |
| Power Connector Type | 3-Pin |
| UPC | 841500110123 |
| Unit Count | 1.0 Count |
| Voltage | 5 Volts |
| Warranty Description | 6 year manufacturer’s warranty |

## Product Details

- **Brand:** Noctua
- **Compatible Devices:** Desktop
- **Cooling Method:** Air
- **Material:** Fibre-glass reinforced PBT
- **Maximum Rotational Speed:** 5000 RPM
- **Noise Level:** 14.9 Decibels
- **Power Connector Type:** 3-Pin
- **Product Dimensions:** 1.57"L x 1.57"W x 0.79"H
- **UPC:** 841500110123
- **Voltage:** 5 Volts

## Images

![Noctua NF-A4x20 5V, Premium Quiet Fan, 3-Pin, 5V Version (40x20mm, Brown) - Image 1](https://m.media-amazon.com/images/I/71lyRpVR4OL.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)

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**Shop now:** [https://www.desertcart.hr/products/46683114-noctua-nf-a4x20-5v-premium-quiet-fan-3-pin-5v](https://www.desertcart.hr/products/46683114-noctua-nf-a4x20-5v-premium-quiet-fan-3-pin-5v)

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*Product available on Desertcart Croatia*
*Store origin: HR*
*Last updated: 2026-07-27*