---
product_id: 50475471
title: "Noctua NF-A4x10 FLX, High-Performance Quiet Slim Fan 40mm | High Airflow Low Noise 10mm Slim Design, for PC and Electronics Cooling, 2 Speed Settings 4500/3700rpm 3-Pin"
brand: "noctua"
price: "145.47 DT"
currency: TND
in_stock: true
category: "Noctua"
url: https://www.desertcart.tn/products/50475471-noctua-nf-a4x10-flx-high-performance-quiet-slim-fan-40mm
store_origin: TN
region: Tunisia
---

# 17.9 dB(A) ultra-quiet 4500/3700 RPM dual speed 8.2 m³/h airflow Noctua NF-A4x10 FLX, High-Performance Quiet Slim Fan 40mm | High Airflow Low Noise 10mm Slim Design, for PC and Electronics Cooling, 2 Speed Settings 4500/3700rpm 3-Pin

**Brand:** noctua
**Price:** 145.47 DT
**Availability:** ✅ In Stock

## Summary

> 🌬️ Stay cool, stay quiet — the fan your tech deserves.

## Quick Answers

- **What is this?** Noctua NF-A4x10 FLX, High-Performance Quiet Slim Fan 40mm | High Airflow Low Noise 10mm Slim Design, for PC and Electronics Cooling, 2 Speed Settings 4500/3700rpm 3-Pin by noctua
- **How much does it cost?** 145.47 DT with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/50475471-noctua-nf-a4x10-flx-high-performance-quiet-slim-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

- • **Slim Yet Powerful:** Compact 40x40x10mm design fits tight spaces while delivering high-performance airflow for your PC and electronics.
- • **Whisper-Quiet Cooling:** Experience near-silent airflow with advanced acoustic optimization—no more noisy distractions at work or home.
- • **Plug & Play Versatility:** Comes with extension cables, Low-Noise Adaptors, and OmniJoin connectors for seamless integration with various devices.
- • **Vibration-Free Operation:** Includes anti-vibration mounts and premium build materials for stable, noiseless performance that lasts.
- • **Customizable Speed Settings:** Dual-speed operation (4500/3700 RPM) lets you fine-tune between maximum cooling and whisper-quiet mode.

## Overview

The Noctua NF-A4x10 FLX is a premium 40x40x10mm 12V slim fan designed for high airflow (8.2 m³/h) and ultra-low noise (17.9 dB(A)). Featuring dual-speed settings (4500/3700 RPM), advanced aerodynamic design, and anti-vibration mounts, it’s the ideal quiet cooling solution for PCs, 3D printers, NAS, and other compact electronics. Backed by a 6-year warranty, it ensures reliable, whisper-quiet performance in tight spaces.

## Description

High-performance 40x10mm fan with advanced aerodynamic design for superior quiet cooling. Ideal for replacing noisy 4cm fans in 3D printers, DVRs, and other devices.

## Features

- Premium quiet fan, 40x40x10 mm, 12V, 3-pin Molex, 4500/3700 RPM, max. 17.9 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
- Ideal replacement for noisy or broken 12V 4cm fans in 3D printers, DVRs, NAS, switches, routers, other network and storage devices, etc.
- 3-pin 12V FLX version can be run 4500 or 3700 rpm using the supplied Low-Noise Adaptors to fine-tune the fan for maximum airflow or near-silent operation
- Includes anti-vibration mounts, fan screws, Low-Noise Adaptor, extension cable and OmniJoin adaptor set for connecting the fan to proprietary fan headers

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B009NQLT0M |
| Air Flow Capacity | 8.2 Cubic Metres Per Hour |
| Best Sellers Rank | 3,881 in Business, Industry & Science ( See Top 100 in Business, Industry & Science ) 43 in Thermal Management Products |
| Brand | Noctua |
| Compatible Devices | Desktop |
| Cooling Method | Air |
| Country Of Origin | China |
| Customer Reviews | 4.8 4.8 out of 5 stars (11,284) |
| Global Trade Identification Number | 04716123314691, 07123290462549, 07133363436841 |
| Included Components | Please see product Description for what is included |
| Item Dimensions L x W x H | 40L x 40W x 10H millimetres |
| Item Weight | 50 Grams |
| Manufacturer | Noctua |
| Manufacturer Part Number | NF-A4x10 |
| Material | Fibre-glass reinforced PBT |
| Max Rotational Speed | 4500 RPM |
| Model Number | NF-A4x10 |
| Noise Level | 17.9 Decibels |
| Number of Items | 1 |
| Number of Packs | 1 |
| Power Connector Type | 3-Pin |
| Product Warranty | 6 year manufacturer’s warranty |
| UPC | 163121136772 809185325669 806291857176 804066543873 842431014054 102930672934 782386476753 172302657890 132017920719 808111662861 809385174852 168141421648 851905102548 |
| Unit Count | 1.0 count |
| Voltage | 12 Volts |

## Product Details

- **Air flow capacity:** 8.2 Cubic Metres Per Hour
- **Brand:** Noctua
- **Compatible devices:** Desktop
- **Cooling method:** Air
- **Material:** Fibre-glass reinforced PBT
- **Maximum rotational speed:** 4500 RPM
- **Noise level:** 17.9 Decibels
- **Power connector type:** 3-Pin
- **Product dimensions:** 40L x 40W x 10H millimetres
- **Voltage:** 12 Volts

## Images

![Noctua NF-A4x10 FLX, High-Performance Quiet Slim Fan 40mm | High Airflow Low Noise 10mm Slim Design, for PC and Electronics Cooling, 2 Speed Settings 4500/3700rpm 3-Pin - Image 1](https://m.media-amazon.com/images/I/81ud+v9ghlL.jpg)

## Available Options

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

## Questions & Answers

**Q: what is the CFM for this fan?**
A: 5

**Q: This might be a dumb question, but what is the operating voltage?  Don't see a rating anywhere in the description or reviews and hoping it's 12VDC.**
A: 12 volts DC. 3 pin connector but comes with a 2 pin adapter and extension cables.

**Q: Have anyone used this to replace the 35 mm assist fans on an asus sabertooth z87?**
A: I have it in my Asus Sabertooth Z170 S and it fits just fine! (just remove the two Anti-Vibration Pads in contact with the TUF Armor to be able to close the lid).
Take into consideration that in my version of the Sabertooth, the assistant fan position is vertical, inside the TUF Thermal Armor, between the IO Shield and the heatsink VRM, and works as an intake fan, to blow fresh air into the motherboard. 
Every Sabertooth Assistant Fans are designed to work differently. I believe in your motherboard the fan is place horizontally, on Top of the TUF Thermal Armor. 
Also the fans needed for your Sabertooth Z87 had a mini 3 pin connector, my motherboard use 3 or 4 pin (regular size) connectors. Therefore the original assistant fan of the Sabertooth Z87 cannot be plugged in the Assist Fan 1 connector of my Sabertooth Z170 S. I know this because I was looking for the fans for my motherboard and buy the Z87 version by mistake, couldn't use it, so I buy the 40mm Noctua, and it works great! Really improved the temperature inside my case. Also my motherboard use 40mm fans. I'm not sure of the Z87 assistant fans size, but putting the two of them together, are exactly the same size, only thing adding up to the size variation, are the Noctuas silicone anti vibrations pads, that can be removed.
Hope this helps even a little bit.

**Q: What is the sound decible rating**
A: http://noctua.at/en/products/fan/nf-a4x10-flx/specification

17.9

## Frequently Bought Together

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

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*Product available on Desertcart Tunisia*
*Store origin: TN*
*Last updated: 2026-08-21*