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🌀 Silence Meets Performance — The Ultimate Mini Cooling Solution
The Noctua NF-A4x20 PWM is a premium 40mm cooling fan designed for compact devices like 1U servers, routers, and NAS units. Featuring a maximum speed of 5000 RPM with advanced Flow Acceleration Channels and acoustic optimization, it delivers powerful airflow at an ultra-quiet 14.9 dB noise level. Its 4-pin PWM connector enables smart automatic speed control, while included anti-vibration mounts and a comprehensive accessory kit ensure easy, stable installation. Trusted by professionals, it comes backed by a 6-year manufacturer warranty.
| ASIN | B071W93333 |
| Air Flow Capacity | 40 Cubic Centimeters Per Second |
| Best Sellers Rank | #22,227 in Computers ( See Top 100 in Computers ) #159 in Computer Case Fans |
| Brand | Noctua |
| Brand Name | Noctua |
| Compatible Devices | Potential Compatible Devices: ['Router', 'Switch', 'Small Desktop'] |
| Compatible devices | Potential Compatible Devices: ['Router', 'Switch', 'Small Desktop'] |
| Cooling Method | Air |
| Cooling method | Air |
| Customer Reviews | 4.8 out of 5 stars 1,961 Reviews |
| Item Dimensions L x W x H | 40L x 40W x 20H millimeters |
| Manufacturer | SER FLYMON |
| Material Type | Fibre-glass reinforced PBT |
| Maximum Rotational Speed | 5000 RPM |
| Model | NF-A4x20 PWM |
| Noise Level | 14.9 Decibels |
| Number of Items | 1 |
| Part Number | NF-A4x20 PWM |
| Power Connector Type | 4-Pin |
| Power connector type | 4-Pin |
| Product dimensions | 40L x 40W x 20H millimeters |
| UPC | 841500110109 |
| Voltage | 12 Volts |
R**I
It's Noctua, you can never go wrong
This fan is one of the most silent and high performing fans that I've gotten, specially for it's size and it's rpm. If there is any fan that I would recommend for it's quality and service, it's Noctua. Don't question it, just buy it!
M**E
Silent!
Amazingly silent
I**Z
Producto muy bueno, envío premium lento.
Noctua es símbolo de calidad aunque un poco caro son sus productos. Para Canarias no recomiendo los envíos premium ya que tardan lo mismo que los normales.
J**F
Noctua is the pinnacle of quality, elegance, and product support
The fan is so quiet, it’s impossible to hear anything. The fan is built super well, and comes with a variety of various connection. I was very pleasantly surprised that Noctua even included an adapter that I exactly would have wanted, which converts the connector to a red and black wire for soldering which is what I needed for my Ender 3. I was so impressed. Comes with all kinds of things in really nice packaging. This was an exceptional product experience. Up there among the very best. Noctua is top notch. I’ll be buying my fans exclusively from them from now on.
K**C
Running it inside Mikrotik CRS317-1G-16S+
Adding adding 10G copper transceivers, the stock fans were unbearably whiny because the copper transceivers run crazy hot. I swapped the stock fans to these and now all I get is peace and tranquility.
M**N
Very quiet
Got 3 of these in my 1U server and it’s very quite, compared to my old fans.
M**G
Very quiet yet still move enough air. Good for 1U switches that come with loud fans
Got these to install in a MikroTik switch that is inside my office area. Worked great! They fit pefectly and the fan header connectors were compatable with the switch. They would probably also work in a 1U server but they may not push enough air for really demanding cooling. Switch and router and lower power 1U devices they are perfect. Also include the standard Noctua goodies in the box. Very nicely made and high quality.
Trustpilot
1 month ago
1 week ago