Noctua NF-A4x10 5V, Premium Quiet Fan, 3-Pin, 5V Version (40x10mm, Brown)
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John K
> 3 dayBought one of these for my raspi setup and it works great. Super quiet and efficient, keeping the board from 50°C-60°C(with heat sinks alone) to 30°C-35°C. Im tempted to buy Noctua fans to replace my 3D printers fans.
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Chuxter
> 3 dayI bought the incorrect voltage model, so this will be returned. It comes in great packaging, with very flexible options for adapters. I wound up buying two fans with the correct voltage to replace the two in the security system I have.
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Ms. Ruby Thompson
> 3 dayBest fan, works so nicely, and it’s soooooo quiet. I just wish it had a bit more cooling capacity.
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troy s
> 3 dayDescription says 5V fan. Fan itself says 12V.
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Seth Evans
> 3 dayThis fan came with more documentation and support hardware than any other product Ive ever bought under $50, and this was under $15. The fan is quiet, but not silent. I replaced the (loud) fan in my brand new DVR with this one; had to change the connector to fit the circuit board but the kit even came with splicing caps!
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Manny
> 3 dayreplace noisy fan on my home surveillance DVR. Made such a difference in noise level!
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Drullkus
> 3 dayAnother excellent Noctua fan! After seeing the need to cool my Raspberry Pi 4, I snapped up this a4x10. After drilling holes into the case, I’ve mounted the fan and am hitting sub 30°c on 5v on the Pi, running Pi-Hole.
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Tony Putra
15-06-2025Nice seller and good quality product
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Walker Dow
> 3 dayIm so happy with how quiet this fan is in my JG924A. I think my roomates might be even happier.
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peter
Greater than one weeksuperb fan real quite
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 |