---
product_id: 260040000
title: "NF-A4x10 FLX, Premium Quiet Fan, 3-Pin (40x10mm, Brown)"
brand: "noctua"
price: "€ 54.22"
currency: EUR
in_stock: true
reviews_count: 6
category: "Noctua"
url: https://www.desertcart.gr/products/260040000-nf-a4x10-flx-premium-quiet-fan-3-pin-40x10mm-brown
store_origin: GR
region: Greece
---

# >150,000 h MTTF durability 4500/3700 RPM dual-speed max. 17.9 dB(A) ultra-quiet NF-A4x10 FLX, Premium Quiet Fan, 3-Pin (40x10mm, Brown)

**Brand:** noctua
**Price:** € 54.22
**Availability:** ✅ In Stock

## Summary

> 🛠️ Upgrade your silence game with Noctua’s premium micro fan!

## Quick Answers

- **What is this?** NF-A4x10 FLX, Premium Quiet Fan, 3-Pin (40x10mm, Brown) by noctua
- **How much does it cost?** € 54.22 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.gr](https://www.desertcart.gr/products/260040000-nf-a4x10-flx-premium-quiet-fan-3-pin-40x10mm-brown)

## 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:** Engineered for over 150,000 hours of reliable performance, ensuring your devices stay cool and quiet for years.
- • **Compact Precision Fit:** Slim 40x40x10 mm size designed to replace noisy 4cm fans in 3D printers, NAS, routers, and more.
- • **Whisper-Quiet Cooling:** Experience near-silent airflow with advanced acoustic optimization, perfect for noise-sensitive setups.
- • **Dual-Speed Flexibility:** Switch effortlessly between 4500 and 3700 RPM using included Low-Noise Adaptors to balance airflow and silence.
- • **Vibration-Free Operation:** Includes anti-vibration mounts and OmniJoin adaptor set for seamless, rattle-free installation.

## Overview

The Noctua NF-A4x10 FLX is a premium 40x40x10 mm 12V 3-pin fan featuring dual-speed operation (4500/3700 RPM), ultra-low noise output at just 17.9 dB(A), and exceptional durability with over 150,000 hours MTTF. Designed with advanced acoustic optimization and vibration-reducing accessories, it’s the ideal quiet cooling upgrade for 3D printers, NAS devices, routers, and other compact electronics.

## Description

Buy Noctua NF-A4x10 FLX, Premium Quiet Fan, 3-Pin (40x10mm, Brown) online on desertcart.ae at best prices. ✓ Fast and free shipping ✓ free returns ✓ cash on delivery available on eligible purchase.

Review: Noctua NF-A4x10 – The Quiet Upgrade Every Ender 3 Pro Needs - I bought these fans as an upgrade for my Ender 3 Pro, and after installing them (along with the silent motherboard for stepper motor noise), my printer became almost completely silent. The difference is night and day. These fans are super high quality, and I absolutely love how quiet my setup is now. If you're tired of a noisy 3D printer, I can't recommend these fans enough!
Review: I installed this Noctua fan in my Reolink RLN16-410 NVR. It did help to lower the noise from the NVR but not a huge amount. I took 10 sound measurements before and after the Noctua fan upgrade. Min and max recorded values were as follows: With original fan: 45.1 - 46.0 dB With Noctua fan: 43.8 - 45.5 dB These NVRs actually run much quieter with the top case removed, so I also took 10 before and after measurements with the case removed: With original fan, case removed: 41.0 - 42.6 dB With Noctua fan, case removed: 38.5 - 40.0 dB These days I'm running the NVR inside a closed cupboard with the Noctua fan installed and the top case removed and I can only just barely hear the running NVR through the closed (internal wooden) door. I think the lingering noise is actually harddrive noise, not fan noise. Hot tip: I previously also applied weather stripping around the door frame which helped a lot to reduce noise leak through the cupboard door.

## 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 |
| Are Batteries Included | No |
| Best Sellers Rank | #20,283 in Computers ( See Top 100 in Computers ) #116 in Computer Case Fans |
| Brand | Noctua |
| Color | Brown |
| Customer Reviews | 4.8 4.8 out of 5 stars (15,126) |
| Date First Available | 16 April 2013 |
| Item Weight | 50 g |
| Item model number | NF-A4x10 |
| Manufacturer | Noctua |
| Product Dimensions | 4 x 4 x 1 cm; 50 g |
| Series | NF-A4x10 FLX |
| Voltage | 12 Volts |

## Product Details

- **Brand:** Noctua
- **Cooling method:** Air
- **Power connector type:** 3-Pin
- **Product dimensions:** 40L x 40W x 10H millimeters
- **Voltage:** 12 Volts

## Images

![NF-A4x10 FLX, Premium Quiet Fan, 3-Pin (40x10mm, Brown) - Image 1](https://m.media-amazon.com/images/I/81ud+v9ghlL.jpg)

## 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

## Customer Reviews

### ⭐⭐⭐⭐⭐ Noctua NF-A4x10 – The Quiet Upgrade Every Ender 3 Pro Needs
*by S***F on 4 January 2025*

I bought these fans as an upgrade for my Ender 3 Pro, and after installing them (along with the silent motherboard for stepper motor noise), my printer became almost completely silent. The difference is night and day. These fans are super high quality, and I absolutely love how quiet my setup is now. If you're tired of a noisy 3D printer, I can't recommend these fans enough!

### ⭐⭐⭐⭐⭐ Review
*by J***S on 15 May 2024*

I installed this Noctua fan in my Reolink RLN16-410 NVR. It did help to lower the noise from the NVR but not a huge amount. I took 10 sound measurements before and after the Noctua fan upgrade. Min and max recorded values were as follows: With original fan: 45.1 - 46.0 dB With Noctua fan: 43.8 - 45.5 dB These NVRs actually run much quieter with the top case removed, so I also took 10 before and after measurements with the case removed: With original fan, case removed: 41.0 - 42.6 dB With Noctua fan, case removed: 38.5 - 40.0 dB These days I'm running the NVR inside a closed cupboard with the Noctua fan installed and the top case removed and I can only just barely hear the running NVR through the closed (internal wooden) door. I think the lingering noise is actually harddrive noise, not fan noise. Hot tip: I previously also applied weather stripping around the door frame which helped a lot to reduce noise leak through the cupboard door.

### ⭐⭐⭐⭐⭐ Review
*by K***T on 10 December 2024*

Fungerar precis som utlovat. Knäpp tyst liten fläkt som flyttar förvånandsvärt mycket luft.

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*Product available on Desertcart Greece*
*Store origin: GR*
*Last updated: 2026-01-22*