--- product_id: 71150026 title: "NF-A4x10 5V PWM" brand: "noctua" price: "£19.95" currency: GBP in_stock: true reviews_count: 13 category: "Noctua" url: https://www.desertcart.co.uk/products/71150026-nf-a4x10-5v-pwm store_origin: GB region: United Kingdom --- # 5000 RPM max speed Ultra-quiet 19.6 dB(A) 5V USB-powered with PWM control NF-A4x10 5V PWM **Brand:** noctua **Price:** £19.95 **Availability:** ✅ In Stock ## Summary > 🌀 Small fan, big impact—cool smarter, not louder! ## Quick Answers - **What is this?** NF-A4x10 5V PWM by noctua - **How much does it cost?** £19.95 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/71150026-nf-a4x10-5v-pwm) ## Best For - noctua enthusiasts ## Why This Product - Trusted noctua brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Compact Yet Mighty:** Ultra-slim 40x40x10 mm design packs up to 5000 RPM for efficient cooling in tight spaces. - • **Whisper-Quiet Powerhouse:** Experience premium airflow at a barely-there 19.6 dB noise level—your workspace stays cool and calm. - • **Seamless USB Compatibility:** Plug & play with included USB power adaptor—perfect for Raspberry Pi, power banks, and smart devices. - • **Precision PWM Speed Control:** 4-pin PWM ensures dynamic fan speed adjustment for optimal cooling and energy efficiency. - • **Built to Last with SSO2 Bearings:** Award-winning durability with >150,000 hours MTTF, backed by a 6-year manufacturer warranty. ## Overview The NF-A4x10 5V PWM is a premium, ultra-quiet 40x40x10 mm fan designed for 5V applications requiring PWM speed control. Featuring advanced aerodynamic Flow Acceleration Channels and SSO2 bearings, it delivers efficient airflow up to 5000 RPM at a whisper-quiet 19.6 dB(A). USB power adaptor included for versatile connectivity with devices like Raspberry Pi and power banks. Built for longevity with over 150,000 hours MTTF and a 6-year warranty, it’s the go-to choice for compact, silent cooling solutions. ## Description Product Description 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. 5V PWM version 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. 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. 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. 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. USB power adaptor cable 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. 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. Review: Great for a Raspberry Pi case! - I bought this fan as I wanted to use it as an extractor on a Raspberry Pi case - I needed something small, silent and low voltage so it could be run from the Pi's USB ports. This fan achieved all those goals and more! It came with a USB adapter, which left the cable pretty long - too long to go a few cm into a USB port on the side of a Pi - so I cut the wires and soldered the USB connector directly on to the wires leaving the fan housing - very simple to do thanks to the nice design from Noctua and it's happily doing its job of keeping a Raspberry Pi nice and cool. Obviously at 5v it doesn't have a lot of oomph, but for its size and how silent it is, it does move a good amount of air. Impressed and recommended for smaller projects such as Raspberry Pi based builds! Review: Teeny USB powered quiet fan, perfect! - Purchased for a 3D printed project, works an absolute treat! So long as Noctua fans stay consistently great I'll be consistently brand loyal, nice and quiet with good airflow. ## Features - Premium quiet fan, 40x40x10 mm, 5V, 4-pin PWM, max. 5000 RPM, max. 19.6 dB(A), >150,000 h MTTF - Award-winning 40x10mm A-series fan with Flow Acceleration Channels and Advanced Acoustic Optimisation frame for superior quiet cooling performance - 5V 4-pin PWM version (5000rpm maximum speed) with polarity protection for 5V applications with PWM speed control - USB power adaptor cable allows the fan to run on devices with USB host ports, power banks or USB power supplies such as those used by smartphones - Includes anti-vibration mounts, fan screws, extension cable and OmniJoin adaptor set for connecting the fan to proprietary fan headers ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07DXS86G7 | | Air Flow Capacity | 8.9 Cubic Metres Per Hour | | Best Sellers Rank | 11,916 in Computers & Accessories ( See Top 100 in Computers & Accessories ) 1,040 in Keyboards, Mice & Input Devices | | Brand | Noctua | | Compatible Devices | Desktop | | Compatible devices | Desktop | | Cooling Method | Air | | Cooling method | Air | | Country Of Origin | China | | Customer Reviews | 4.8 out of 5 stars 1,118 Reviews | | Included Components | NF-A4x10 5V PWM | | Item Dimensions L x W x H | 40L x 10W x 40H millimetres | | Item Weight | 80 Grams | | Manufacturer | Noctua | | Manufacturer Part Number | NF-A4X10 5V PWM | | Material | Fibre-glass reinforced PBT | | Max Rotational Speed | 5000 RPM | | Model Number | NF-A4X10 5V PWM | | Noise Level | 19.6 Decibels | | Number of Items | 1 | | Power Connector Type | 4-Pin | | Power connector type | 4-Pin | | Product Warranty | 6 year manufacturer’s warranty | | Product dimensions | 40L x 10W x 40H millimetres | | UPC | 841501110320 | | Unit Count | 1.0 count | | Voltage | 5 Volts | ## Product Details - **Air flow capacity:** 8.9 Cubic Metres Per Hour - **Brand:** Noctua - **Compatible devices:** Desktop - **Cooling method:** Air - **Material:** Fibre-glass reinforced PBT - **Maximum rotational speed:** 5000 RPM - **Noise level:** 19.6 Decibels - **Power connector type:** 4-Pin - **Product dimensions:** 40L x 10W x 40H millimetres - **Voltage:** 5 Volts ## Images ![NF-A4x10 5V PWM - Image 1](https://m.media-amazon.com/images/I/81ud+v9ghlL.jpg) ![NF-A4x10 5V PWM - Image 2](https://m.media-amazon.com/images/I/81jxOZS8HFL.jpg) ![NF-A4x10 5V PWM - Image 3](https://m.media-amazon.com/images/I/817F+fKcp5L.jpg) ![NF-A4x10 5V PWM - Image 4](https://m.media-amazon.com/images/I/81AWklDfROL.jpg) ![NF-A4x10 5V PWM - Image 5](https://m.media-amazon.com/images/I/91q4VBG-wuL.jpg) ## Questions & Answers **Q: Can I control the fan speed via software? (over usb)** A: Mind is controlled but done with firmware. It is super quiet thou **Q: What resistors do i need to work with my raspberry pi 4 pwm** A: Depends on how your attaching it, I'm using it via the enclosed usb adapter for past 6 months, but it runs constant, I have purchased a 2n2222 npn transistor but not used it yet in conjunction with pinouts for temperature control. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Great for a Raspberry Pi case! *by D***O on 19 July 2020* I bought this fan as I wanted to use it as an extractor on a Raspberry Pi case - I needed something small, silent and low voltage so it could be run from the Pi's USB ports. This fan achieved all those goals and more! It came with a USB adapter, which left the cable pretty long - too long to go a few cm into a USB port on the side of a Pi - so I cut the wires and soldered the USB connector directly on to the wires leaving the fan housing - very simple to do thanks to the nice design from Noctua and it's happily doing its job of keeping a Raspberry Pi nice and cool. Obviously at 5v it doesn't have a lot of oomph, but for its size and how silent it is, it does move a good amount of air. Impressed and recommended for smaller projects such as Raspberry Pi based builds! ### ⭐⭐⭐⭐⭐ Teeny USB powered quiet fan, perfect! *by D***D on 16 May 2023* Purchased for a 3D printed project, works an absolute treat! So long as Noctua fans stay consistently great I'll be consistently brand loyal, nice and quiet with good airflow. ### ⭐⭐⭐⭐⭐ Leo S *by O***E on 4 June 2026* This is really silent. It comes with nice packing and useful accessories. Great choice if you need a really silent cooling fan. ## Frequently Bought Together - Noctua NF-A4x10 5V PWM, Premium Quiet Fan with USB Power Adaptor Cable, 4-Pin, 5V Version (40x10mm, Brown) - Noctua NF-A4x10 FLX, Premium Quiet Fan, 3-Pin (40x10mm, Brown) - Easycargo 4pcs 40mm Black Fan Grill/Guard with Screws + Nuts (4 Pack) --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.co.uk/products/71150026-nf-a4x10-5v-pwm](https://www.desertcart.co.uk/products/71150026-nf-a4x10-5v-pwm) --- *Product available on Desertcart United Kingdom* *Store origin: GB* *Last updated: 2026-07-04*