--- product_id: 50475471 title: "NF-A4x10 FLX" brand: "noctua" price: "NZ$67" currency: NZD in_stock: true reviews_count: 13 category: "Noctua" url: https://www.desertcart.nz/products/50475471-nf-a4x10-flx store_origin: NZ region: New Zealand --- # >150,000 h MTTF for unmatched durability 4500/3700 RPM dual-speed control max. 17.9 dB(A) ultra-quiet operation NF-A4x10 FLX **Brand:** noctua **Price:** NZ$67 **Availability:** ✅ In Stock ## Summary > 🌀 Silence Meets Power: The Ultimate Compact Cooling Solution ## Quick Answers - **What is this?** NF-A4x10 FLX by noctua - **How much does it cost?** NZ$67 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.nz](https://www.desertcart.nz/products/50475471-nf-a4x10-flx) ## Best For - noctua enthusiasts ## Why This Product - Trusted noctua brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Built to Last:** Industry-leading >150,000 hours mean this fan keeps your devices cool and your workflow uninterrupted. - • **All-Inclusive Pro Kit:** Comes with extension cables, OmniJoin adaptors, and screws—engineered for seamless, custom installations. - • **Dual-Speed Flexibility:** Easily toggle between high-performance 4500 RPM or whisper-quiet 3700 RPM using included low-noise adaptors. - • **Vibration-Free Mounting:** Anti-vibration silicone mounts ensure ultra-smooth operation without distracting rattles or shakes. - • **Whisper-Quiet Precision:** Experience near-silent airflow with advanced acoustic optimization—perfect for noise-sensitive workspaces. ## Overview The Noctua NF-A4x10 FLX is a premium 40x40x10mm 12V fan designed for ultra-quiet, high-efficiency cooling in compact devices like 3D printers, NAS, and routers. Featuring dual-speed operation (4500/3700 RPM), advanced aerodynamic design, and a comprehensive accessory kit including anti-vibration mounts and OmniJoin adaptors, it delivers exceptional airflow with minimal noise (max 17.9 dB(A)) and boasts an impressive lifespan exceeding 150,000 hours. ## Description Product Description 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. 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. 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. 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. Reduced motor hub size This allows for more blade surface area and thus contributes to the NF-A4x10's superior airflow and pressure performance. Scope of delivery Low-Noise Adaptor (L.N.A.) 3:2 Pin Adaptor OmniJoin Adaptor Set 30cm Extension Cable 4 Vibration-Compensators 4 Fan Screws Flow Acceleration Channels By speeding up the airflow at the crucial outer blade regions, this reduces suction side flow separation and thus leads to better efficiency and lower vortex noise. Review: Quiet and 3to2 PIN converter included - A brilliant fan, like all the ones from Noctua, but this one perfectly meets the fan requirements for a Hikvision NVR, in my case the DS-7608NXI. The fan is inaudible whilst still providing good airflow. Now, the only thing you can hear is the power supply fan, which I’m also thinking about replacing at some point. Crucially, the kit includes a 3-pin to 2-pin adaptor, so you don't even need to cut any cables or change the connectors on the plug. Review: Top-notch-quality quiet fan and _unbelievably comprehensive_ accessory kit, worth the price of the kit alone! - I bought this fan to replace the noisy one included in an old HDD IDE rack I need to use (the cheap supplied fan has become unbearably noisy due to dust after just a few months of everyday use, unfortunately...). This was the first time I bought a Noctua fan, even if I knew this is one of the highest-quality brands of silent fans, and although some people might think this specific kit is overpriced for a small 40x40x10mm fan, I can assure you that the packaging and the accessories included in it are worth the price of the product alone! The fan itself is almost completely inaudible outside of a case, especially when used at reduced speed, which can be obtained by using the clever low-noise adaptor: a small, inconspicuous cable extension, which goes between the fan connecting cable and the power source connector, and lowers the rotating speed from 4500 to 3700 rpm; by the way, the air flow produced even at reduced speed seems considerable anyway, in my opinion. But the most amazing aspect of this product are the supplied accessories included in this gorgeous kit: apart from some typical, high-quality metal screws, you get professional silicon pins, which can be used to mount the fan screwlessly in order to reduce vibrations, an extension cable, an adaptor cable to convert from 3 to 2 power pins, and the most wonderful adapter of them all: the incredible OmniJoin adaptor set, which includes an extension cable ending with 2 truncated red/black power wires, and four _amazing_ "crimp-like" connectors, which allow you to join the truncated power wires to any other corresponding wires coming from _any_ appropriate fan power source inside the PC, _without even having to remove the insulation from the cables_ (!). Basically, in case you want to attach this fan to any "custom" connecting cable with a connector that does not fit any of the included adaptors, you can just cut the connector off of your available custom power cable, and join the resulting truncated black/red wires with the corresponding truncated ones from the Noctua OmniJoin adapter, "crimping" (pressing) the red/black power wires together using 2 of the 4 omnijoint proprietary connectors with flat-nose pliers (not included). If this sounds complicated, actually I assure you it is not, and everything is explained in extremely clear instructions with detailed figures included in the kit, of course. It is a _very_ clever and professional alternative to just "splicing" power cables together with insulating tape, in my opinion! In the future, I will definitely try more Noctua products like this one, in case I need to attach a fan to a custom power cable, hoping they will work with no problems... (Please note that I have _not_ tried the omnijoint connectors, since I do not need them for my specific connector, luckily.) So, all things considered, in my opinion you _definitely_ get what you pay with this amazing product, and I just hope the fan will last for a long time! ## Features - 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 ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B009NQLT0M | | Air Flow Capacity | 8.2 Cubic Metres Per Hour | | Best Sellers Rank | 3,339 in Business, Industry & Science ( See Top 100 in Business, Industry & Science ) 23 in Thermal Management Products | | Brand | Noctua | | Compatible Devices | Desktop | | Compatible devices | Desktop | | Cooling Method | Air | | Cooling method | Air | | Country Of Origin | China | | Customer Reviews | 4.8 out of 5 stars 11,102 Reviews | | Global Trade Identification Number | 04716123314691, 07123290462549, 07133363436841 | | Included Components | Please see product Description for what is included | | Item Dimensions L x W x H | 40L x 40W x 10H millimetres | | Item Weight | 50 Grams | | Manufacturer | Noctua | | Manufacturer Part Number | NF-A4x10 | | Material | Fibre-glass reinforced PBT | | Max Rotational Speed | 4500 RPM | | Model Number | NF-A4x10 | | Noise Level | 17.9 Decibels | | Number of Items | 1 | | Power Connector Type | 3-Pin | | Power connector type | 3-Pin | | Product Warranty | 6 year manufacturer’s warranty | | Product dimensions | 40L x 40W x 10H millimetres | | UPC | 163121136772 809185325669 806291857176 804066543873 842431014054 102930672934 782386476753 172302657890 132017920719 808111662861 809385174852 168141421648 851905102548 | | Unit Count | 1.0 count | | Voltage | 12 Volts | ## Product Details - **Air flow capacity:** 8.2 Cubic Metres Per Hour - **Brand:** Noctua - **Compatible devices:** Desktop - **Cooling method:** Air - **Material:** Polybutylene Terephthalate - **Maximum rotational speed:** 4500 RPM - **Noise level:** 17.9 Decibels - **Power connector type:** 3-Pin - **Product dimensions:** 40L x 40W x 10H millimetres - **Voltage:** 12 Volts ## Images ![NF-A4x10 FLX - Image 1](https://m.media-amazon.com/images/I/81ud+v9ghlL.jpg) ![NF-A4x10 FLX - Image 2](https://m.media-amazon.com/images/I/81pLnZYn2oL.jpg) ![NF-A4x10 FLX - Image 3](https://m.media-amazon.com/images/I/91q4VBG-wuL.jpg) ![NF-A4x10 FLX - Image 4](https://m.media-amazon.com/images/I/91Q8zLVOqyL.jpg) ![NF-A4x10 FLX - Image 5](https://m.media-amazon.com/images/I/71at786W2SL.jpg) ## Questions & Answers **Q: what is the CFM for this fan?** A: 5 **Q: This might be a dumb question, but what is the operating voltage? Don't see a rating anywhere in the description or reviews and hoping it's 12VDC.** A: 12 volts DC. 3 pin connector but comes with a 2 pin adapter and extension cables. **Q: Have anyone used this to replace the 35 mm assist fans on an asus sabertooth z87?** A: I have it in my Asus Sabertooth Z170 S and it fits just fine! (just remove the two Anti-Vibration Pads in contact with the TUF Armor to be able to close the lid). Take into consideration that in my version of the Sabertooth, the assistant fan position is vertical, inside the TUF Thermal Armor, between the IO Shield and the heatsink VRM, and works as an intake fan, to blow fresh air into the motherboard. Every Sabertooth Assistant Fans are designed to work differently. I believe in your motherboard the fan is place horizontally, on Top of the TUF Thermal Armor. Also the fans needed for your Sabertooth Z87 had a mini 3 pin connector, my motherboard use 3 or 4 pin (regular size) connectors. Therefore the original assistant fan of the Sabertooth Z87 cannot be plugged in the Assist Fan 1 connector of my Sabertooth Z170 S. I know this because I was looking for the fans for my motherboard and buy the Z87 version by mistake, couldn't use it, so I buy the 40mm Noctua, and it works great! Really improved the temperature inside my case. Also my motherboard use 40mm fans. I'm not sure of the Z87 assistant fans size, but putting the two of them together, are exactly the same size, only thing adding up to the size variation, are the Noctuas silicone anti vibrations pads, that can be removed. Hope this helps even a little bit. **Q: What is the sound decible rating** A: http://noctua.at/en/products/fan/nf-a4x10-flx/specification 17.9 ## Customer Reviews ### ⭐⭐⭐⭐⭐ Quiet and 3to2 PIN converter included *by M***S on 3 May 2026* A brilliant fan, like all the ones from Noctua, but this one perfectly meets the fan requirements for a Hikvision NVR, in my case the DS-7608NXI. The fan is inaudible whilst still providing good airflow. Now, the only thing you can hear is the power supply fan, which I’m also thinking about replacing at some point. Crucially, the kit includes a 3-pin to 2-pin adaptor, so you don't even need to cut any cables or change the connectors on the plug. ### ⭐⭐⭐⭐⭐ Top-notch-quality quiet fan and _unbelievably comprehensive_ accessory kit, worth the price of the kit alone! *by V***R on 16 November 2012* I bought this fan to replace the noisy one included in an old HDD IDE rack I need to use (the cheap supplied fan has become unbearably noisy due to dust after just a few months of everyday use, unfortunately...). This was the first time I bought a Noctua fan, even if I knew this is one of the highest-quality brands of silent fans, and although some people might think this specific kit is overpriced for a small 40x40x10mm fan, I can assure you that the packaging and the accessories included in it are worth the price of the product alone! The fan itself is almost completely inaudible outside of a case, especially when used at reduced speed, which can be obtained by using the clever low-noise adaptor: a small, inconspicuous cable extension, which goes between the fan connecting cable and the power source connector, and lowers the rotating speed from 4500 to 3700 rpm; by the way, the air flow produced even at reduced speed seems considerable anyway, in my opinion. But the most amazing aspect of this product are the supplied accessories included in this gorgeous kit: apart from some typical, high-quality metal screws, you get professional silicon pins, which can be used to mount the fan screwlessly in order to reduce vibrations, an extension cable, an adaptor cable to convert from 3 to 2 power pins, and the most wonderful adapter of them all: the incredible OmniJoin adaptor set, which includes an extension cable ending with 2 truncated red/black power wires, and four _amazing_ "crimp-like" connectors, which allow you to join the truncated power wires to any other corresponding wires coming from _any_ appropriate fan power source inside the PC, _without even having to remove the insulation from the cables_ (!). Basically, in case you want to attach this fan to any "custom" connecting cable with a connector that does not fit any of the included adaptors, you can just cut the connector off of your available custom power cable, and join the resulting truncated black/red wires with the corresponding truncated ones from the Noctua OmniJoin adapter, "crimping" (pressing) the red/black power wires together using 2 of the 4 omnijoint proprietary connectors with flat-nose pliers (not included). If this sounds complicated, actually I assure you it is not, and everything is explained in extremely clear instructions with detailed figures included in the kit, of course. It is a _very_ clever and professional alternative to just "splicing" power cables together with insulating tape, in my opinion! In the future, I will definitely try more Noctua products like this one, in case I need to attach a fan to a custom power cable, hoping they will work with no problems... (Please note that I have _not_ tried the omnijoint connectors, since I do not need them for my specific connector, luckily.) So, all things considered, in my opinion you _definitely_ get what you pay with this amazing product, and I just hope the fan will last for a long time! ### ⭐⭐⭐⭐⭐ 4x1 Comes with a 2 pin adapter. Ideal for noisy HikVision NVR. Swap is 5/10 min job. *by H***E on 20 January 2026* I have an 8k system with 5 cameras. My installers fitted an NVR that had no fan, and I had 2 hard drive fails in 9 months. Hik apparently had many such complaints so decided it was down to heat. My installer swapped the box for the same one, but from October 2025 it’s had a fan in it. And that fan was very noisy. After installation my wife walked in the house and thought I had some fan heater on. I could even hear it over the TV it’s plugged into. Cue some research and buying one of these. It was very easy to swap over took 10 mins top, I basically just unplugged the old one, unscrewed two screws to remove and screwed this one in and plugged in. Made sure I put it in so the air is blowing out, not in. It isn’t obvious from the product description, that it comes with a 3 pin to 2 pin adapter. It does. The third pin is for fan control speed Hik of course hasn’t bothered fitting to the NVR so you just need the 2 power pins. Now it’s much better. Far from silent, but I don’t really notice it now and can’t hear it over the TV. In another design fail Hik not only put in a noisy fan, but have it blowing through perforated holes in the case. To make it quieter I could cut out those perforated holes but that would invalidate warranty of the NVR box but I read it makes another quite big difference if I so chose to do so. I’ve retained the original fan to put back in, in case the NVR ever fails or still trashes hard drives. Another method to make it even quieter would be to plug in the included noise reduction wire, but all that does is limit current to the fan and fan speed, so won’t clear as much warm air- not sure about that given the hard drive failures Hik seem to now agree was caused by excessive heat in an uncooled NVR. Please open your box and check the fan size before buying and placement. Different NVRs have different set ups. The one I had was really easy, some Hik NVRs have fans on the in built power supplies and it gets a bit more complicated as you have to take that out to change. Also some May have differing size fans. Many however will be 4cm by 1cm. I couldn’t not have bought one 2cm in depth as it would not have squeezed in the space. So an easy, very quick and simple solution for me, I am delighted. ## Frequently Bought Together - Noctua NF-A4x10 FLX, Premium Quiet Fan, 3-Pin (40x10mm, Brown) - Noctua NF-A6x25 FLX, Premium Quiet Fan, 3-Pin (60mm, Brown) - Noctua NF-A4x20 FLX Computer Case Fan - Cooling Components (Computer Case, Fan, 4 cm, 3700 RPM, 5000 RPM, 4400 RPM) --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.nz/products/50475471-nf-a4x10-flx](https://www.desertcart.nz/products/50475471-nf-a4x10-flx) --- *Product available on Desertcart New Zealand* *Store origin: NZ* *Last updated: 2026-06-01*