Noctua NF-A4x10 5V, Premium Quiet Fan, 3-Pin, 5V Version (40x10mm, Brown)
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Kelly K.
Greater than one weekAdded to help silence a DVR Security camera by replacing the old noisy ones. Well worth the purchase!
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JB
> 3 dayive been using these for years and they always set the bar
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Phil
> 3 dayPerfect replacement fan for an old Dreamcast (requires 3D printed adapter). Wires are really long and I was impressed with the packaging and hardware/adapters that were included even though I didn’t need them in my case.
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SKAN
Greater than one weekBy far the best far on the market. I used mine for additional cooling in my dreamcast.
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Khalil White
> 3 dayNoctua has a reputation for quality and the packaging and presentation do them justice.
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Jeff Banfield
> 3 dayThis with a 3d printed bracket works well in the Dreamcast.
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vfilipch
11-06-2025The best. Period.
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Genesis Windler
> 3 dayOur fan broke in our receiver. This worked perfect. The fan is quiet.
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Rudy Collins
> 3 dayPerfect. I used these fans to replace the POS fans that came with amcrest DVR. They are working very well and are super quiet.
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H. Tsang
> 3 dayI read about getting my RP4 4gb Ram overclock will need to have a good fan. I got the ICE TOWER Cooler to it. I wasnt a fan of the LED Colored Fan so I changed it to Noctua fan before I put this thing together. Wouldnt be able to tell you how quite the original fan would be but my Noctua fan is great!!! It came with different plugs for different needs. Its worth it to pay the premium for the premium quality.
Featuring advanced aerodynamic design measures such as Flow Acceleration Channels and an AAO standard frame, the NF-A4x10 5V is a dedicated 5V version of Noctua’s highly optimised, premium quality quiet 40x10mm fan. Smooth Commutation Drive technology and Noctua’s reference class SSO2 bearing ensure superb running smoothness and excellent long-term stability. Topped off with modular cabling and the OmniJoin Adaptor Set, the NF-A4x10 5V is a premium choice for demanding 5V applications.
5V version
Many devices such as network or storage solutions use 5 volt 40mm fans. With the same operating voltage and the included OmniJoin adaptor set that makes it compatible with proprietary fan headers, the NF-A4x10 5V is ideal for replacing noisy or broken 5V 40mm fans.
Please Note: Being a 5V fan, the NF-A4x10 5V cannot be run at 12V and will be damaged when used with typical 12V power sources such as PC motherboard fan headers.
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Flow Acceleration ChannelsThe 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 BearingThe 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 sizeThanks 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. |
Inner Surface MicrostructuresWith 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. |
Please Note:
Being a 5V fan, the NF-A4x10 5V cannot be run at 12V and will be damaged when used with typical 12V power sources such as PC motherboard fan headers.
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| NF-A4x10 PWM | NF-A4x10 FLX | NF-A4x10 5V PWM | NF-A4x10 5V | |
| Connector | 4-pin PWM | 3-pin | 4-pin PWM | 3-pin |
| Voltage | 12V | 12V | 5V | 5V |
| RPM: | Max: 5000 / Min: 1000 | 4500 | Max: 5000 / Min: 1000 | 4500 |
| RPM with L.N.A. | 3700 | 3700 | - | - |
| Acoustical Noise | 19,6 dB(A) | 17,9 dB(A) | 19,6 dB(A) | 17,9 dB(A) |
| Acoustical Noise with L.N.A. | 12,9 dB(A) | 12,9 dB(A) | - | - |
| Size | 40x40x10 mm | 40x40x10 mm | 40x40x10 mm | 40x40x10 mm |