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Noctua NF-A4x10 FLX, Premium Quiet Fan, 3-Pin (40x10mm, Brown)

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$13.95

$ 6 .99 $6.99

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About this item

  • Premium quiet fan, 40x40x10 mm, 12V, 3-pin Molex, 4500/3700 RPM, max. 17.9 dB(A), >150,000 h MTTF
  • Award-winning 40x10mm A-series fan with Flow Acceleration Channels and Advanced Acoustic Optimisation frame for superior quiet cooling performance
  • Ideal replacement for noisy or broken 12V 4cm fans in 3D printers, DVRs, NAS, switches, routers, other network and storage devices, etc.
  • 3-pin 12V FLX version can be run 4500 or 3700 rpm using the supplied Low-Noise Adaptors to fine-tune the fan for maximum airflow or near-silent operation
  • Includes anti-vibration mounts, fan screws, Low-Noise Adaptor, extension cable and OmniJoin adaptor set for connecting the fan to proprietary fan headers



Product Description

NF-A4x10 FLX header

Featuring advanced aerodynamic design measures such as Flow Acceleration Channels and Noctua’s AAO frame, the NF-A4x10 FLX is a highly optimised, premium quality quiet fan in 40x10mm size. Smooth Commutation Drivetechnology and Noctua’s reference class SSO2 bearings ensure superb running smoothness and excellent long-term stability. Topped off with modular cabling and a Low-Noise Adaptor and OmniJoin Adaptor Set, the NF-A4x10 is a premium choice for the highest demands.

5V PWM version

AAO frame

Noctua's AAO (Advanced Acoustic Optimisation) frames feature integrated anti-vibration pads as well as Noctua's proprietary Stepped Inlet Design and Inner Surface Microstructures, both of which further refine the fan's performance/noise efficiency.

NF-A4x10 FAC

Flow Acceleration Channels

The NF-A4x10 impeller features suction side Flow Acceleration Channels. By speeding up the airflow at the crucial outer blade regions, this measure reduces suction side flow separation and thus leads to better efficiency and lower vortex noise.

SSO2

SSO2 Bearing

The NF-A4x10 features the further optimised second generation of Noctua's renowned, time-tested SSO bearing. With SSO2, the rear magnet is placed closer to the axis to provide even better stabilisation, precision and durability.

NF-A4x10 AVP

Integrated Anti-Vibration Pads

Integrated Anti-Vibration Pads made from extra-soft silicone minimise the transmission of minute vibrations while maintaining full compatibility with all standard mounting systems and fan clips used on heatsinks.

NF-A4x10 ISM

Inner Surface Microstructures

With the tips of the fan blades ploughing through the boundary layer created by the Inner Surface Microstructures, flow separation from the suction side of the blades is significantly suppressed, which results in reduced blade passing noise and improved airflow and pressure efficiency.

NF-A4x10 banner

Reduced motor hub size

Thanks to its streamlined, compact motor design, the NF-A4x10's motor hub is smaller than with conventional 4cm fans. This allows for more blade surface area and thus contributes to the NF-A4x10's superior airflow and pressure performance.


Custom
Reviewed in the United States on February 8, 2025
I got this for my Reolink NVR, which with the factory fan, is almost unbearable to have running near you due to the constant noise from the fan.Glad I found this fan because it absolutely makes it quieter without a doubt. If you want to make it even quieter, you can install the inline noise reducer (that is included in the box) which slows the fan speed down a bit, but at the cost of a little less air flow.Also, it comes with all the various adapters you need to make it a truly plug and play solution.Just as a reference, for my NVR, I needed to use the adapter that converts the Noctua fan's 3 pin connector to the corresponding 2 pin connector on the NVR board, which conveniently is included in the Noctua box.If you're tired of hearing the droning noise from your NVR, look no further!
Arancha
Reviewed in Spain on February 11, 2025
He instalado el Noctua NF-A4x10 FLX en mi impresora 3D para mejorar la refrigeración del hotend y reducir el ruido, y el cambio ha sido espectacular.🔹 Silencio absoluto: Noctua es conocido por sus ventiladores silenciosos, y este no es la excepción. Ahora mi impresora funciona con mucho menos ruido.🔹 Mejora la disipación de calor: Gracias a su diseño optimizado, el flujo de aire es suficiente para mantener estable la temperatura del hotend o de la electrónica.🔹 Materiales de alta calidad: Se nota la diferencia con los ventiladores genéricos, este Noctua no vibra ni se desgasta rápidamente.🔹 Compatible con múltiples aplicaciones: Perfecto para impresoras 3D, routers y otros dispositivos pequeños.⚠️ Cosas a tener en cuenta:Voltaje: Este modelo es de 12V, por lo que si tu impresora usa 24V necesitarás un convertidor o conectarlo a una fuente de 12V.Menos presión estática: Si lo usas para enfriar el hotend, verifica que tenga suficiente flujo de aire en tu configuración.Más caro que otros ventiladores, pero la calidad y durabilidad lo justifican.💡 Conclusión: Si quieres menos ruido, mejor disipación y un ventilador duradero, el Noctua NF-A4x10 FLX es una excelente elección para tu impresora 3D.
Saif
Reviewed in the United Arab Emirates on January 4, 2025
I bought these fans as an upgrade for my Ender 3 Pro, and after installing them (along with the silent motherboard for stepper motor noise), my printer became almost completely silent. The difference is night and day. These fans are super high quality, and I absolutely love how quiet my setup is now. If you're tired of a noisy 3D printer, I can't recommend these fans enough!
David Fournier
Reviewed in the United States on January 22, 2025
These fans supply good air flow, with minimal wind noise. They came with standard mounting holes and lots of connector options.
Corey S
Reviewed in the United States on January 17, 2025
Not sure if it was needed but I wanted to add an exhaust fan for my Reolink RLN36 NVR. The packaging on this fan is quite impressive and you can tell that it's a premium product. I've always heard about Noctua fans known for their ugly color but great performance with low noise. This is my first time buying one.Installation was very easy I had to use a bit of force on the 2 screws to get them into the Reolink chasis holes as they were a bit smaller than the screws. Fan was plug and play, I just had to use the pin adapter. I didn't use the low noise adapter because it's not needed. I can barely hear the fan at it's current speed.I'm happy with the purchase as it will keep my Skyhawk 16TB drive a little bit more comfy and cool inside the NVR.
Tommy
Reviewed in the United States on January 15, 2025
Used this to replace the loud fan in my Silverstone FX500 Flex PSU and pushes enough air at 3,500 rpm to keep my PSU cool. At 4,500 RPM it’s noticeable but not horribly loud but helps push even more air when gaming. However I could not get the fan to work when I hooked it to the PSU and had to hook it to a fan header on my MOB but that’s not to big of a problem anyway. Some were saying this fan does not push enough air but seems fine to me.
Brandon
Reviewed in the United States on August 27, 2024
I've always been a fan of Noctua products, and the NF-A4x10 FLX is no exception. These fans are incredibly quiet and efficient, living up to Noctua's reputation for quality. The packaging was top-notch, and I appreciated the variety of cables and adapters included in the box. Although I initially intended to use this fan for a Raspberry Pi, I discovered that the following was the for too high of a voltage. Despite this, I found another use case for it, and it performs exceptionally well, providing great power with minimal noise. If you are looking for one for your Raspberry Pi you can also find the 5v version online as well. If you need a reliable, quiet fan, Noctua is the way to go.
Marco Cugne
Reviewed in Italy on August 23, 2024
Ho installato la ventola Noctua NF-A4X10 FLX sulla mia stampante 3D Sunlu S8, e devo dire che sono davvero soddisfatto.SilenziositàLa prima cosa che ho notato è quanto sia silenziosa. Rispetto alla ventola originale, c'è una differenza enorme. Ora la stampante funziona in modo molto più tranquillo, il che è un grande vantaggio, soprattutto quando stampo per lunghe ore o durante la notte.IntercambiabilitàL'installazione è stata facilissima. La Noctua NF-A4X10 FLX si è adattata perfettamente alla Sunlu S8, senza bisogno di modifiche o adattatori. È una sostituzione diretta e veloce, ideale per chi cerca un upgrade senza complicazioni.EfficienzaNon solo è silenziosa, ma è anche altamente efficiente. Ho notato che la gestione del calore è migliorata, mantenendo la temperatura costante e aiutando a prevenire eventuali surriscaldamenti durante stampe lunghe e complesse.ConclusioniIn sintesi, la Noctua NF-A4X10 FLX è un'ottima scelta per chiunque voglia migliorare la propria stampante 3D Sunlu S8. Silenziosa, perfettamente intercambiabile e con un'efficienza che fa davvero la differenza. Consigliatissima per chi cerca qualità e prestazioni elevate.
Aaron
Reviewed in the United States on August 18, 2024
I purchased this fan to replace the fan that was failing and getting extremely noisy. I was pleased to find out that this fan comes with a few different adapters, one of them being the 2 pin connector that is required for the Hik's motherboard. The polarity was correct so no wires had to be modified. This made for an easy replacement. This fan is also much quieter than the stock fan. I also noticed an increased amount of airflow too. I can actually feel the air being discharged unlike the original fan. Just be careful when ordering it because it's is both a 5 vdc and 12vdc version. Noctua never disappoints, except for the ugly brown that they love so much. I like black fans.
Karl-Rune Palmqvist
Reviewed in Sweden on December 10, 2024
Fungerar precis som utlovat.Knäpp tyst liten fläkt som flyttar förvånandsvärt mycket luft.
Lampjesman
Reviewed in the Netherlands on May 3, 2023
Past perfect in een anycubic mega s ! Wat een zee van rust , geen lawaai meer!
Just Someone
Reviewed in the United States on December 11, 2013
Wow! I had to write this review! Based on the other reviews, I purchased this product (thanks to all reviewers!). I saw that another reviewer commented on the accessories this came with...that the accessories allowed a person to tackle any project. I thought "Well, that's nice. But I'm sure I'll just be able to hook this up without the need." In part, I thought this because I saw the fans in my Lorex DVR connected with a TWO pin end, and the Amazon picture displays a TWO pin end. Well, I was wrong...the unit ships with a THREE pin connector as the "default". So, I too was super happy with the additional accessories or else I would have been stuck! Here's more...My Lorex DVR has two fans. The fans in the Lorex DVR are "Fonsoning fsy40s12m." This company is in China. An email to them went unresponded to. An online research revealed only ONE seller that would sell these in lots of 50 each at a minimum...I only needed two! The fans in my Lorex DVR were LOUD already, but, when one started to go (after only about a year and four months), it became unbearably loud! Lorex support is horrible, as is their warranty (one year). I was told to either send in the DVR for a charged repair or replace the entire DVR. After conducting a ton of research, I discovered that the Lorex fans are 40mm (each side length) and 10mm deep...I received quite the education as someone who started out with zero know-how on this.So, I opened up the fan packaging...the cable had THREE pins for the connector...not TWO like what I needed and what the Amazon picture displayed. Okay, well this came with a 3 to 2 pin connector adapter...I thought "no problem." By the way, there is also an extension cable, in the event your fan is placed far from the power supply...very nice. Back to the 3 to 2 pin adapter...I put it in and assembled the entire DVR...a LOT of work (at least for plain old me). After all that work, the fan didn't even budge! Ouch!Then, I saw these other adapters included by Noctua. The instructions stated that, where the polarity is OPPOSITE what the connectors are set up as, then these special adapters can be used (you may be wondering what the heck I'm talking about, but to explain that would be tough here. Perhaps an easy way to explain it is if the wires on the Noctua are opposite what the power supply is in your unit...meaning, the red wire needs to connect to the black wire instead of red, etc.). I thought..."Oh no. Do I need to do this???!!! I can't just use an adapter?" Yes...I did. But, better this than not having a working fan. Unfortunately, you don't know if you have a reversed polarity problem until the fan is plugged in, so I recommend NOT reassembling the entire unit until you've tested the fan first, if possible and if it's safe. So, I went back to the drawing board and took the old fans out and cut their wires close to where the fans are located....because, with this setup, you need to use the pins of the ORIGINAL fans. You then need to insert the ends of the ORIGINAL fans (i.e., the cords with the pins connected to them...not the cord with the original FAN connected to it) into these special adapters with the ends of the NOCTUA fans...no wire stripping is necessary. You just push the buttons down on these special adapters with a pair of pliers and...voila...you have a makeshift fan connection using the NOCTUA fans with the ORIGINAL fans pins. I plugged them in and I had motion!!Now, one of the accessories comes with a special cable that will reduce the RPM's of the fans to make them quieter. I thought, "Hmmmm...the 'normal' RPM's on these things must be a bit loud for Noctua to include such a cable." NO!! They are super quiet! They are quieter than the original fans when I first received the Lorex DVR brand new!!! In fact, had I known about these Noctuas back then, I might have just installed them at that time!!! I need to stand next to the DVR to hear the fans (maybe five to ten feet or so).Oh, I almost forgot...the connections of the fans themselves. So, the old Lorex fans were screwed into the case of the DVR. There was a special nut in the back of the Lorex fans to accept the screw used. The nut wouldn't fit the Noctua since the nut was hexagonal, and the back of the Noctua is round. "Now what am I going to do?" I thought! Well, Noctua included an answer for this too!!!! There are four included rubbery inserts that you put through the case holes for your unit. In this case, I only needed two per fan. I couldn't use four because there were only two holes in the DVR at the bottom. So, I inserted these rubber pieces through the two bottom holes and used only the two bottom holes on the fan. I found that my needle-nosed pliers were very handy here because I didn't have much space and I really wanted a snug fit, so I used the pliers to pull the rubber pieces through. In fact, these rubber pieces are supposed to decrease sound even more, in addition to the rubber bumpers on them.The fans are super secure, super quiet, super efficient, they have accessories that REALLY helped my scenario. I couldn't be happier! And, I didn't have to spend hundreds or thousands of dollars on a repair or replacement of my DVR and lose any more time without it. And, they are quieter than the original fans...without the RPM reduction cable! When I looked, these fans are about twice the price of another fan I saw on Amazon, but, in my opinion, WELL worth it. If you have a DVR with fans that are going bad or just plain noisy, these Noctuas just my be your ticket.