--- product_id: 46683114 title: "NF-A4x20 5V" brand: "noctua" price: "£19.05" currency: GBP in_stock: true reviews_count: 13 url: https://www.desertcart.co.uk/products/46683114-nf-a4x20-5v store_origin: GB region: United Kingdom --- # >150,000 h MTTF for unmatched durability 5000 RPM high-speed airflow Ultra-quiet 14.9 dB(A) noise level NF-A4x20 5V **Brand:** noctua **Price:** £19.05 **Availability:** ✅ In Stock ## Summary > 🌀 Elevate your airflow game—quiet, compact, and built to outperform. ## Quick Answers - **What is this?** NF-A4x20 5V by noctua - **How much does it cost?** £19.05 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/46683114-nf-a4x20-5v) ## 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 - • **Built to Last:** Over 150,000 hours mean this fan outlives your projects, backed by a 6-year warranty for peace of mind. - • **Compact Powerhouse:** 40x40x20mm size fits perfectly in tight 1U server racks, routers, NAS, and other industrial gear without compromise. - • **Whisper-Quiet Cooling:** Experience near-silent operation with advanced acoustic optimization—keep your workspace calm and focused. - • **Plug & Play Versatility:** 5V 3-pin Molex with OmniJoin adapter ensures seamless integration into your existing setups—no hassle, just cool efficiency. - • **Vibration-Free Performance:** Includes anti-vibration mounts to eliminate noise and protect sensitive equipment—because your gear deserves the best. ## Overview The Noctua NF-A4x20 5V is a premium 40x40x20mm quiet fan designed for 5V industrial applications, delivering up to 5000 RPM airflow at an ultra-low noise level of 14.9 dB(A). Featuring award-winning aerodynamic design with Flow Acceleration Channels and advanced acoustic optimization, it ensures efficient cooling in compact spaces like 1U servers, routers, and NAS devices. Equipped with anti-vibration mounts, a 3-pin Molex connector, and an OmniJoin adapter, it offers versatile, easy installation and long-lasting reliability with over 150,000 hours MTTF and a 6-year warranty. ## Description Product description Featuring advanced aerodynamic design measures such as Flow Acceleration Channels and Noctua’s AAO frame, the NF-A4x20 5V is a dedicated 5V version of Noctua’s highly optimised, premium quality quiet 40x20mm fan. Smooth Commutation Drive technology and Noctua’s reference class SSO2 bearings ensure superb running smoothness and excellent long-term stability. Topped off with modular cabling and the OmniJoin Adaptor Set, the NF-A4x20 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-A4x20 5V is ideal for replacing noisy or broken 5V 40mm fans. Please note: Being a 5V fan, the NF-A4x20 5V 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-A4x20 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-A4x20 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. Integrated Anti-Vibration Pads Integrated Anti-Vibration Pads made from extra-soft silicone minimise the transmission of minute vibrations while maintaining full compatibility with all standard mounting systems and fan clips used on heatsinks. Scope of delivery NA-EC2 30cm extension cable OmniJoin adaptor set 4x NA-AV3 anti-vibration mounts Fan screws Please Note Being a 5V fan, the NF-A4x20 5V cannot be run at 12V and will be damaged when used with typical 12V power sources such as PC motherboard fan headers. ## Features - Premium quiet fan, 40x40x20 mm, 5V, 3-pin Molex, 5000 RPM, 14.9 dB(A), >150,000 h MTTF - Award-winning A-series design with Flow Acceleration Channels and Advanced Acoustic Optimisation frame for superior quiet cooling performance - 40x20mm size ideal for 1U applications or replacing fans in network and storage equipment (routers, switches, NAS etc.) or other devices such as DVRs - 5V 3-pin version (5000rpm) for 5V-based industrial applications or replacing 5V fans in various devices - 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 | B072Q3CMRW | | Best Sellers Rank | #443 in Computer Case Fans | | Brand | Noctua | | Brand Name | Noctua | | Compatible Devices | Desktop | | Cooling Method | Air | | Customer Reviews | 4.8 out of 5 stars 390 Reviews | | Item Dimensions L x W x H | 1.57"L x 1.57"W x 0.79"H | | Manufacturer | Noctua | | Material Type | Fibre-glass reinforced PBT | | Maximum Rotational Speed | 5000 RPM | | Model | NF-A4x20 5V | | Noise Level | 14.9 Decibels | | Number of Items | 1 | | Part Number | NF-A4x20 5V | | Power Connector Type | 3-Pin | | Product Dimensions | 1.57"L x 1.57"W x 0.79"H | | UPC | 841500110123 | | Unit Count | 1.0 Count | | Voltage | 5 Volts | | Warranty Description | 6 year manufacturer’s warranty | ## Product Details - **Brand:** Noctua - **Compatible Devices:** Desktop - **Cooling Method:** Air - **Material:** Fibre-glass reinforced PBT - **Maximum Rotational Speed:** 5000 RPM - **Noise Level:** 14.9 Decibels - **Power Connector Type:** 3-Pin - **Product Dimensions:** 1.57"L x 1.57"W x 0.79"H - **UPC:** 841500110123 - **Voltage:** 5 Volts ## Images ![NF-A4x20 5V - Image 1](https://m.media-amazon.com/images/I/71lyRpVR4OL.jpg) ![NF-A4x20 5V - Image 2](https://m.media-amazon.com/images/I/71tPkk5TaXL.jpg) ![NF-A4x20 5V - Image 3](https://m.media-amazon.com/images/I/81trIc57WdL.jpg) ![NF-A4x20 5V - Image 4](https://m.media-amazon.com/images/I/71+IJ7qyW-L.jpg) ![NF-A4x20 5V - Image 5](https://m.media-amazon.com/images/I/71G5+G0k2+L.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Review *by A***A on April 28, 2020* ### ⭐⭐⭐⭐⭐ Review *by S***D on July 8, 2024* ### ⭐⭐⭐⭐⭐ Review *by B***N on February 21, 2025* ## Frequently Bought Together - Noctua NF-A4x20 5V, Premium Quiet Fan, 3-Pin, 5V Version (40x20mm, Brown) - Noctua NF-A4x10 5V, Premium Quiet Fan, 3-Pin, 5V Version (40x10mm, Brown) - OPSFALCON 2 Pack USB to 3-Pin / 4-Pin PWM 5V USB Sleeved Fan Power Adapter Cable, USB to 3 Pin / 4 Pin Case Fan Adapter Connector Cable (USB-3Pin/4Pin Cable) --- ## 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/46683114-nf-a4x20-5v](https://www.desertcart.co.uk/products/46683114-nf-a4x20-5v) --- *Product available on Desertcart United Kingdom* *Store origin: GB* *Last updated: 2026-05-16*