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🌀 Silence Meets Power: The Ultimate Pro-Grade Mini Fan Upgrade
The Noctua NF-A4x20 FLX is a premium 40x40x20 mm quiet fan engineered for professional-grade cooling in compact devices like network switches and NAS. Featuring advanced aerodynamic design, ultra-low noise levels of 14.9 dB(A), and flexible 3-speed control, it ensures efficient airflow with whisper-quiet operation. Its award-winning build quality and versatile connectors make it the go-to upgrade for demanding environments where silence and performance are non-negotiable.
| ASIN | B071J8CZP9 |
| Best Sellers Rank | #29,138 in Computers ( See Top 100 in Computers ) #226 in Computer Case Fans |
| Brand | Noctua |
| Brand Name | Noctua |
| Compatible Devices | Desktop, Laptop |
| Compatible devices | Desktop, Laptop |
| Cooling Method | Air |
| Cooling method | Air |
| Customer Reviews | 4.8 out of 5 stars 2,481 Reviews |
| Global Trade Identification Number | 09010018100112 |
| Item Dimensions L x W x H | 20L x 40W x 40H millimeters |
| Item Weight | 50 Grams |
| Manufacturer | Noctua |
| Material Type | Fibre-glass reinforced PBT |
| Maximum Rotational Speed | 3500 RPM |
| Model | NF-A4x20 FLX |
| Noise Level | 14.9 Decibels |
| Number of Items | 1 |
| Part Number | NF-A4x20 FLX |
| Power Connector Type | 3-Pin |
| Power connector type | 3-Pin |
| Product dimensions | 20L x 40W x 40H millimeters |
| Unit Count | 1.0 Count |
| Voltage | 12 Volts |
R**X
Amazing silent fan
I order two silent fans and replace a very loud original fans for network switch. Amazing performance no sound at all.
D**N
Perfect for noisy TP-Link Switches
I bought a new TP-Link Switch and it was ridiculously noisy. I mean, I get that its supposed to live in a server room but surely they could've done something to tone it down a bit. Two of these to replace the ones inside the switch have made it almost silent while still providing sufficient airflow.
S**H
Just Wow
I have replaced stock fans from my Unifi Ubiquiti USG Pro and I here the sound barely, before with stock fans I mom used to complain about noise while she was in other bedroom. Now no sound from the fans at all, for your reference I am not using any low noice adaptors. I will purchase two more to replace in 24 port PoE switch.
D**N
Awesome
Works great in my switch, way quiter and moves the same amount of air.
D**R
Not a peep
Replacing like for like in a Netgear switch, these didn't work at all.
空**海
素晴らしい！
安定のノクチュアです ウンチ色じゃなければ全てのファンをノクチュアに交換したいくらいです
Trustpilot
3 weeks ago
1 month ago