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Noctua
98% positive ratings from 1K+ customers
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Noctua's premium cooling components are internationally renowned for their superb quietness, exceptional performance and quality.
Featuring advanced aerodynamic design measures such as Flow Acceleration Channels and an AAO frame, the NF-A4x10 5V PWM is a PWM enabled 5V variant of Noctua’s award-winning, premium quality quiet 40x10mm fan. The custom designed NE-FD3 PWM IC that integrates Smooth Commutation Drive technology and Noctua’s reference class SSO2 bearings assure superb running smoothness and excellent long-term stability. Topped off with modular cabling and the OmniJoin Adaptor Set Adaptor Set, the NF-A4x10 5V PWM is a premium choice for demanding 5V applications that require PWM control.
Many devices such as network or storage solutions use 5 volt 40mm fans with PWM speed control. With the same operating voltage, PWM support and the included OmniJoin adaptor set that makes it compatible with proprietary fan headers, the NF-A4x10 5V PWM is ideal for replacing noisy or broken 5V 40mm fans with PWM.
Please Note: Being a 5V fan, the NF-A4x10 5V PWM cannot be run at 12V and will be damaged when used with typical 12V power sources such as PC motherboard fan headers.
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.
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.
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.
The fan includes a USB power adaptor cable that allows it to run on power banks, devices with USB host ports or USB power supplies such as those used for smartphones.
Being a 5V fan, the NF-A4x10 5V PWM 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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| 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 |
This item  Noctua NF-A4x10 5V PWM, Premium Quiet Fan with USB Power Adaptor Cable, 4-Pin, 5V Version (40x10mm, Brown) | Recommendations | Ìý  | Ìý  | Ìý | Ìý  | |
| Price | £14.34 | £14.24 | £13.31 | £17.37 | £14.29 | £35.85 |
| Delivery | — | Get it as soon as Wednesday, Jan 29 | Get it as soon as Wednesday, Jan 29 | Get it as soon as Wednesday, Jan 29 | Get it as soon as Wednesday, Jan 29 | Get it as soon as Wednesday, Jan 29 |
| Customer Ratings | ||||||
| Sold by | ÍøÆغÚÁÏ | NOCTUA - Designed in Austria | ELUTENG | NOCTUA - Designed in Austria | NOCTUA - Designed in Austria | ÍøÆغÚÁÏ |
| cooling method | Air | Air | Air | Air | Air | Air |
| power connector type | 4-Pin | 4-Pin | 2-Pin | 3-Pin | 3-Pin | 4-Pin |
| compatible devices | Desktop | Desktop | Desktop | Desktop | Desktop | Desktop |
| maximum rotational speed | 5000 rpm | 5000 rpm | 1500 rpm | 2200 rpm | 4500 rpm | 1900 rpm |
| noise level | 19.6 decibels | 19.6 decibels | 29 decibels | 17.7 decibels | 17.9 decibels | 21.4 decibels |
| material | Fibre-glass reinforced PBT | Fibre-glass reinforced PBT | Metal | Fibre-glass reinforced PBT | Fibre-glass reinforced PBT | Sterrox® LCP |
| wattage | 0.35 watts | — | 6.75 watts | 0.75 watts | 0.25 watts | — |
