Noctua NF-A4x10 5V, Premium Quiet Fan, 3-Pin, 5V Version (40x10mm, Brown)
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Mister B
> 3 dayPerfect fan for a Dreamcast fan mod (3D printed mounting hardware available on eBay). Its quiet and it moves a surprising amount of air despite being tiny.
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Sj Construction
Greater than one weekGreat fans. High quality and very quiet. Extra adapters for most applications.
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slanwar
> 3 dayLove this fan, doesnt make any noise and is always on, I use on my raspberry pi3 plex server.
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Some Guy
> 3 dayI use these on my Raspberry Pi 3 and 4. The fans work well as simple, effective cooling solutions.
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Matthew Mcmillion
> 3 dayFirst Noctua fan that I planned to use with a Raspberry Pi project. Lasted maybe a day or two before a bearing went out and it started making a horrible grinding noise and then eventually died.
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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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elizabeth
> 3 dayThis fan is so quiet that I did not believe it was running. The air flow is a bit lower than I needed for my application, perhaps I just got the wrong model. The build quality is excellent and I am pretty sure the fan will last way longer than other. The fan blades also wont break like other fans our there, so it you need a fan where things might touch the blades accidentally, this is a good option.
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Absolute
04-06-2025These fans are great!
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3SHOOB
> 3 dayvery good
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Misc.
> 3 dayI love Noctua fans for my desktop and I love Noctua fans for my SBC projects, too.
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 |