๐ Stay cool, stay ahead โ the silent fan your setup deserves!
The Noctua NF-A4x20 FLX is a premium 40mm computer case fan engineered for compact devices like 1U servers, routers, and NAS. It delivers up to 4400 RPM with an airflow of 9.4 mยณ/h while maintaining an ultra-quiet 14.9 dB noise level. Featuring advanced acoustic optimization and anti-vibration mounts, it ensures efficient, silent cooling in tight spaces. Included accessories enable easy installation and compatibility with proprietary fan strips.
| Air Flow Capacity | 9.4 Cubic Metres Per Hour |
| Asin | B072JK9GX6 |
| Best Sellers Rank | 105,115 in Computers & Accessories (See Top 100 in Computers & Accessories) 1,098 in Thermal Management Products 1,733 in Fans & Cooling |
| Brand | Noctua |
| Compatible Devices | Desktop, Server, Router, Switch |
| Cooling Method | Air |
| Customer Reviews | 4.8 4.8 out of 5 stars (2,386) 4.8 out of 5 stars |
| Included Components | 1 |
| Item Dimensions L X W X H | 40L x 40W x 20H millimetres |
| Manufacturer | Noctua |
| Manufacturer Part Number | NF-A4x20 FLX |
| Material | Plastic |
| Max Rotational Speed | 4400 RPM |
| Model Number | NF-A4x20 FLX |
| Noise Level | 14.9 Decibels |
| Number Of Items | 1 |
| Number Of Packs | 1 |
| Power Connector Type | 3-Pin |
| Unit Count | 1.0 count |
| Upc | 841500110116 |
| Voltage | 12 Volts |
User
Just received fan box open and used condition
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. itโs upside down and the anti vibration mount is bent out of pack and looks damaged
User
Better and quieter
Works great, same airflow but much quieter as other brands. Comes with all the adapters to fit perfectly in any device. Highly recommend.
User
Super silent
Super silent, buy it
User
Not loud at all. Wonderful.
I used this to replace the fan in my hub. Keeps things cool.
User
Quiet; must have for a USG pro in your home!
I have fitted these, blowing, into my Ubiquiti UniFi USG-Pro-4 and I can report the high pitch whine is now gone. Pretty handy when you don't have a rack out of the way of habitual areas!Only been installed an hour but so far so good, and I chose to use the noise suppression mounts, they aren't recommended for this application but I wanted to try it and the resonance from the metal cover is now much more subtle. Running these fans without a cover show they are actually virtually silent, but obviously, it's not recommended to run this device with the cover off (airflow etc)!
User
Wow
I bought an ethernet switch that was 10 GB per second and I ended up unplugging it because it was so loud. I couldnโt focus at work. My son told me to buy this fan and I was skeptical. But I just installed it and itโs virtually silent now. I was ready to toss a $500 ethernet switch and this $20 fan saved it.In the photos, I attached, you can see the old fan and the new fan
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