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❄️ Stay cool, stay ahead — silent power in a compact frame!
The Noctua NF-A4x20 FLX is a premium 40mm computer case fan engineered for tight spaces like 1U servers and network devices. It features a max speed of 4400 RPM, delivering 9.4 m³/h airflow while maintaining an ultra-quiet 14.9 dB noise level. Equipped with anti-vibration mounts and a full accessory kit, it ensures easy, vibration-free installation. Trusted by professionals, this fan combines award-winning aerodynamic design with reliable, silent cooling performance.
| ASIN | B072JK9GX6 |
| Air Flow Capacity | 9.4 Cubic Metres Per Hour |
| Best Sellers Rank | 83,776 in Business, Industry & Science ( See Top 100 in Business, Industry & Science ) 894 in Thermal Management Products 1,299 in Fans & Cooling |
| Brand | Noctua |
| Compatible Devices | Desktop, Server, Router, Switch |
| Cooling Method | Air |
| Customer Reviews | 4.8 4.8 out of 5 stars (2,367) |
| Included Components | 1 |
| Item Dimensions L x W x H | 40L x 40W x 20H millimetres |
| Manufacturer | Noctua |
| Material | Plastic |
| Max Rotational Speed | 4400 RPM |
| Noise Level | 14.9 Decibels |
| Power Connector Type | 3-Pin |
| UPC | 841500110116 |
| Unit Count | 1.0 count |
| Voltage | 12 Volts |
T**N
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. it’s upside down and the anti vibration mount is bent out of pack and looks damaged
A**L
Super silent, buy it
A**R
I used this to replace the fan in my hub. Keeps things cool.
C**N
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)!
W**S
Its nice for the small pc
R**S
Fan was so quiet I had to visually check to make sure it was spinning. It comes with both a low noise adapter and an ultra low noise adapter. I can't imagine needing them since it is barely audible at full speed. Certainly the quietest fan this size that I've ever encountered.
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