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🌀 Cool quietly, perform loudly — the fan your gear deserves.
The Noctua NF-A4x20 PWM is a premium 40mm cooling fan designed for compact devices like 1U servers, routers, and NAS units. Featuring a max speed of 5000 RPM with advanced 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, silent installation. Trusted by professionals, it comes backed by a 6-year manufacturer warranty.
| ASIN | B071W93333 |
| Air Flow Capacity | 40 Cubic Centimetres Per Second |
| Best Sellers Rank | 28,265 in Computers & Accessories ( See Top 100 in Computers & Accessories ) 175 in Computer Cases |
| Brand | 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 1,976 Reviews |
| Item Dimensions L x W x H | 40L x 40W x 20H millimetres |
| Manufacturer | SER FLYMON |
| Manufacturer Part Number | NF-A4x20 PWM |
| Material | Fiberglass Reinforced PBT |
| Max Rotational Speed | 5000 RPM |
| Model Number | NF-A4x20 PWM |
| Noise Level | 14.9 Decibels |
| Number of Items | 1 |
| Number of Packs | 1 |
| Power Connector Type | 4-Pin |
| Power connector type | 4-Pin |
| Product dimensions | 40L x 40W x 20H millimetres |
| UPC | 841500110109 |
| Voltage | 12 Volts |
M**N
Very quiet
Got 3 of these in my 1U server and it’s very quite, compared to my old fans.
F**9
Quieten down now!
Did the job, replaced fans on Netgear 10GB appliances, and they sit quietly now in the office!
I**Y
Brilliant
Ticks every box and is brilliant value for money
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.
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**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.
T**G
Super Leise und Leicht zu installieren
Ich habe diese Lüfter gekauft um den Geräuschpegel diverser Netzwerkgeräte in meinem Serverschrank zu reduzieren. Die Installation ist einfach und man hat so einiges an Zubehör dabei. Die Lüfter sind ausserordentlich Leise und fast nicht zu hören. Die Kühlleistung ist akzeptabel, aber natürlich nicht vergleichbar mit echten Server-Lüftern. Für wen aber ein paar Grad mehr in den Geräten im Gegenzug zu deutlich leiseren Lüftern akzeptabel ist, sind diese hier sehr zu empfehlen.
ち**ん
四隅のゴムは無いのと変わらないけど
高回転で静か、風量も十分あるチップセット冷却に使ってます。
Trustpilot
1 week ago
2 months ago