---
product_id: 93385299
title: "Noctua NF-A4x20 FLX Computer Case Fan - Cooling Components (Computer Case, Fan, 4 cm, 3700 RPM, 5000 RPM, 4400 RPM)"
brand: "noctua"
price: "€ 2.81"
currency: EUR
in_stock: false
reviews_count: 1
url: https://www.desertcart.gr/products/93385299-noctua-nf-a4x20-flx-computer-case-fan-cooling-components-computer
store_origin: GR
region: Greece
---

# Up to 5000 RPM for powerful airflow Ultra-quiet operation at just 14.9 dB Includes anti-vibration mounts & extension cables Noctua NF-A4x20 FLX Computer Case Fan - Cooling Components (Computer Case, Fan, 4 cm, 3700 RPM, 5000 RPM, 4400 RPM)

**Brand:** noctua
**Price:** € 2.81
**Availability:** ❌ Out of Stock

## Summary

> 🌀 Stay cool, stay silent — the pro’s choice for sleek, efficient airflow

## Quick Answers

- **What is this?** Noctua NF-A4x20 FLX Computer Case Fan - Cooling Components (Computer Case, Fan, 4 cm, 3700 RPM, 5000 RPM, 4400 RPM) by noctua
- **How much does it cost?** € 2.81 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.gr](https://www.desertcart.gr/products/93385299-noctua-nf-a4x20-flx-computer-case-fan-cooling-components-computer)

## 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 40x20mm Design:** Perfect fit for 1U servers, NAS, routers & tight spaces
- • **Versatile Connectivity:** Omnijoin adapter for seamless fan strip integration
- • **Complete Installation Kit:** Anti-vibration mounts, screws & extension cable included
- • **Whisper-Quiet Performance:** Advanced acoustic optimization keeps noise minimal
- • **Award-Winning Aerodynamics:** Flow Acceleration Channels boost cooling efficiency

## Overview

The Noctua NF-A4x20 FLX is a premium 40x20mm computer case fan engineered for high-performance cooling in compact environments. Delivering up to 5000 RPM with ultra-quiet 14.9 dB noise levels, it features award-winning aerodynamic design and comes with a full accessory kit including anti-vibration mounts and extension cables, making it ideal for 1U servers, NAS devices, and network hardware.

## Description

1

## Features

- Noctua Nf A4X20 Flx Computer Case Fan Computer Cooling Components Computer Case Fan 4Cm 3700Rpm 5000Rpm 4400Rpm
- Award Winning A Series Design With Flow Acceleration Channels And Advanced Acoustic Optimization Frame For Superior, Quiet Cooling Performance
- Brand: Noctua
- 40X20Mm Size, Ideal For 1U Applications Or Replacing Fans In Network And Storage Devices, Routers, Switches, Nas, Etc. Or Other Devices Such As Dvr.
- Includes Anti Vibration Mounts, Fan Screws, Extension Cable, And Omnijoin Adapter Set To Connect The Fan To Proprietary Fan Strips.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | Noctua |
| Part number | NF-A4x20 FLX |
| Item Weight | 170 g |
| Product Dimensions | 4 x 4 x 2 cm; 170 g |
| Item model number | NF-A4x20 FLX |
| Material | Plastic |
| Voltage | 12 Volts |
| Item Package Quantity | 1 |
| Air Flow Capacity | 9.4 Cubic Metres Per Hour |
| Noise Level | 14.9 Decibels |
| Included components | 1 |
| Batteries included? | No |
| Batteries Required? | No |

## Product Details

- **Product dimensions:** 40L x 40W x 20H millimetres
- **Brand:** Noctua
- **Power connector type:** 3-Pin
- **Voltage:** 12 Volts
- **Cooling method:** Air
- **Compatible devices:** Desktop, Server, Router, Switch
- **Noise level:** 14.9 Decibels
- **Material:** Plastic
- **Maximum rotational speed:** 4400 RPM
- **Air flow capacity:** 9.4 Cubic Metres Per Hour

## Images

![Noctua NF-A4x20 FLX Computer Case Fan - Cooling Components (Computer Case, Fan, 4 cm, 3700 RPM, 5000 RPM, 4400 RPM) - Image 1](https://m.media-amazon.com/images/I/71lyRpVR4OL.jpg)
![Noctua NF-A4x20 FLX Computer Case Fan - Cooling Components (Computer Case, Fan, 4 cm, 3700 RPM, 5000 RPM, 4400 RPM) - Image 2](https://m.media-amazon.com/images/I/81abh0+LmWL.jpg)
![Noctua NF-A4x20 FLX Computer Case Fan - Cooling Components (Computer Case, Fan, 4 cm, 3700 RPM, 5000 RPM, 4400 RPM) - Image 3](https://m.media-amazon.com/images/I/71NYZ3JQcOL.jpg)
![Noctua NF-A4x20 FLX Computer Case Fan - Cooling Components (Computer Case, Fan, 4 cm, 3700 RPM, 5000 RPM, 4400 RPM) - Image 4](https://m.media-amazon.com/images/I/71Ywc8LceeL.jpg)
![Noctua NF-A4x20 FLX Computer Case Fan - Cooling Components (Computer Case, Fan, 4 cm, 3700 RPM, 5000 RPM, 4400 RPM) - Image 5](https://m.media-amazon.com/images/I/61xqdXxj1uL.jpg)

## Questions & Answers

**Q: Whats the cfm of this fan?**
A: The output, converted from 9.4 m3/h is just 5.5 cfm, very low indeed.

**Q: 14.9dba at what speed?**
A: 5000rpm.

**Q: How many dB is this fan?**
A: 14.9db(a)

**Q: What is the mtbf. How many hours of life can I expect from one of these?**
A: Not sure about the Mtbf, but i purchased 2 of this in Jan 2020, and they have been running 24/7 till now with no problems. Installed them in my 2 poe+ switches

## Customer Reviews

### ⭐ Just received fan box open and used condition
*by T***N on 2 December 2024*

Just received order supposed to be brand new and seal was broken boxes flap looked like it had been opened and fan is not facing the display boxes opening at front. it’s upside down and the anti vibration mount is bent out of pack and looks damaged

## Frequently Bought Together

- Noctua NF-A4x20 FLX Computer Case Fan - Cooling Components (Computer Case, Fan, 4 cm, 3700 RPM, 5000 RPM, 4400 RPM)
- Noctua NF-A4x10 FLX, Premium Quiet Fan, 3-Pin (40x10mm, Brown)
- Noctua NF-A4x20 PWM, Premium Quiet Fan, 4-Pin (40x20mm, Brown)

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*Product available on Desertcart Greece*
*Store origin: GR*
*Last updated: 2026-01-26*