SKU: 15512059028

Noctua NF-A4X10 12V FLX 40x10mm Premium Cooling Fan

$31.41 $34.90
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Description

Noctua NF-A4X10 12V FLX 40x10mm Premium Cooling FanFeaturing advanced aerodynamic design measures such as Flow Acceleration Channels and Noctuas AAO frame, the NF A4x10 FLX is a highly optimised, premium quality quiet fan in 40x10mm size. Smooth Commutation Drive technology and Noctuas reference class SSO2 bearings guarantee superb running smoothness and excellent long term stability. Topped off with modular cabling, a Low Noise Adaptor and OmniJoin Adaptor Set as well as 6 years manufacturers

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 Drive technology and Noctua’s reference class SSO2 bearings guarantee superb running smoothness and excellent long-term stability. Topped off with modular cabling, a Low-Noise Adaptor and OmniJoin Adaptor Set as well as 6 years manufacturer’s warranty, the NF-A4x10 is a premium choice for the highest demands.

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.

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.

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.

Stepped Inlet Design

Noctua's Stepped Inlet Design adds turbulence to the influx in order to facilitate the transition from laminar flow to turbulent flow, which reduces tonal intake noise, improves flow attachment and increases suction capacity, especially in space-restricted environments.

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.

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.

Smooth Commutation Drive 2

The latest version of Noctua's advanced Smooth Commutation Drive system ensures superb running smoothness by eliminating torque variations and switching noises. This makes the NF-A4x10 remarkably quiet even at very close distances.

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.

Low-Noise Adaptor for full flexibility

The NF-A4x10 FLX (Flexibility) is supplied with a Low-Noise Adaptor (L.N.A.) that reduces the maximum fan speed from 4500 to 3700rpm so that it can be fine-tuned for superior airflow or maximum quietness.

3 to 2-pin Adaptor and Polarity Protection

The NF-A4x10 comes with an adaptor from 3-pin Molex to the 2-pin connectors used on many graphics cards or network and storage devices. An integrated diode provides polarity protection on 2-pin connections.

OmniJoin™ Adaptor Set

Many devices featuring 40mm fans use proprietary fan headers, so the NF-A4x10 comes with Noctua's OmniJoin™ adaptor set. Just cut the original fan's cable, fix it to the adaptor using the supplied 3M Scotchlok™ connectors and you can plug the NF-A4x10 to proprietary fan headers!

Extensive cabling options

The fan's short 20cm primary cable minimises cable clutter in typical applications while the supplied 30cm extension provides extended reach when necessary. Both cables are fully sleeved.

6-year manufacturer’s warranty

Noctua fans are renowned for their impeccable quality and outstanding longevity. Like all Noctua fans, the NF-A4x10 features an MTTF of more than 150.000 hours rating and comes with a full 6-year manufacturer's warranty.

Technical Specifications

Size: 40x40x10 mm
Mounting hole spacing: 32x32 mm
Connector & pin-configuration: 3-pin
Cable length: 20cm + 30cm NA-EC1 extension cable
Bearing: SSO2
Blade geometry: A-Series with Flow Acceleration Channels
Frame technology: AAO (Advanced Acoustic Optimisation)
Rotational speed (+/- 10%): 4500 RPM
Rotational speed with L.N.A. (+/- 10%): 3700 RPM
Airflow: 8,2 m³/h
Airflow with L.N.A.: 6,6 m³/h
Acoustical noise: 17,9 dB(A)
Acoustical noise with L.N.A.: 12,9 dB(A)
Static pressure: 1,78 mm H₂O
Static pressure with L.N.A.: 1,21 mm H₂O
Max. input power: 0,6 W
Max. input current: 0,05 A
Operating voltage: 12 V
MTTF: > 150.000 h
Warranty: 6 years

Package Includes:

  1. Noctua NF-A4X10 FLX 40x10mm Premium Cooling Fan
  2. Low-Noise Adaptor (L.N.A.)
  3. 3:2 Pin Adaptor
  4. OmniJoin Adaptor Set
  5. 30cm Extension Cable
  6. 4 Vibration-Compensators
  7. 4 Fan Screws
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 15512059028

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4.4 ★★★★★
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K
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Kindle Customer
Dallas, US
★★★★★ 5
Indestructable toy
Size: Medium/Large, Product Packaging: Standard Packaging
My dogs loves it and cannot tear it up no matter how hard she tries and squeaker is secure and excites her when she manages to crush the center ball. Loves to chase it.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 7, 2026
A
Verified Purchase
Amazon Customer
Birmingham, US
★★★★★ 4
Not Boerboel proof
I have a terrible time finding toys for my 10 month old Boerboel. Either she ignores it or tears it up immediately. She likes this toy (jumbo size) and actually chewed on it for 20 min. Bad side is she chewed a hole. It lasted longer than any of the other fairly chewy toys I've tried. She doesn't like the hard chews.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 18, 2024
P
Verified Purchase
Peter Jacobus
West Palm Beach, US
★★★★★ 5
Favorite Toy
Size: Medium/Large, Product Packaging: Standard Packaging
My dog is a 3.5 yr old mix and this toy has been her favorite toy by far for three years. She likes it as a squeak toy, loves it as a tug toy and can't live without it as fetch toy. I roll it on its edge outside and she chases it - sometimes it take cool bounces or swerves and sometimes its just rolls straight and fast and whatever it does she can't get enough of it. She demands we play fetch with it at least three times a day. She's not a great releaser of fetch toys so there's plenty of tugging play involved too. We've had three of these over three years, but she's 75 pounds of muscle and it gets a work out every day so it's a really tough toy. All dogs are different, so I don't know what your dog will think, but it's been a fantastic toy for our girl.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 21, 2026
N
Verified Purchase
Nick Shaw
Birmingham, US
★★★★★ 1
So Bad
Size: Medium/Large, Product Packaging: Standard Packaging, Size: Medium/Large, Product Packaging: Standard Packaging
Had high hopes for this toy as Kong is fantastic with aggressive chewers as or Lulu is. This toy didn't last 30 minutes before she was able to tear it apart. The rubber and plastic are not of the same quality on nearly all there other toys she has. Have found better toys for half the cost. Kong needs to do better.
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Reviewed in the United States on January 30, 2026
K
Verified Purchase
Kelly Cole
Draper, US
★★★★★ 5
Best toys for active dogs
Size: Medium/Large, Product Packaging: Standard Packaging, Size: Medium/Large, Product Packaging: Standard Packaging
My dogs love these Kong toys. I have border collies. They are active and these toys go on ever walk, out to the pasture, they carry them everywhere! We like this toy as well As the Kong ball shown in the picture. Indestructible!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 13, 2026

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