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🌀 Quiet power in a compact package — cool smarter, work better.
The Noctua NF-A4x20 FLX is a premium 40x40x20mm high-performance fan designed for professional-grade cooling in compact devices like 1U servers, routers, and NAS units. Featuring three adjustable speeds up to 5000 RPM, ultra-low noise levels at 14.9 dB(A), and advanced aerodynamic design, it delivers efficient airflow with whisper-quiet operation. Its robust build ensures over 150,000 hours of reliable service, supported by a 6-year warranty, making it the go-to choice for managers demanding silent, dependable cooling in critical network and storage equipment.
| ASIN | B071J8CZP9 |
| Best Sellers Rank | 3,198 in Business, Industry & Science ( See Top 100 in Business, Industry & Science ) 21 in Thermal Management Products 71 in Fans & Cooling |
| Brand | Noctua |
| Compatible Devices | Server, Router, NAS, Switch, Video Recorder |
| Cooling Method | Air |
| Country Of Origin | China |
| Customer Reviews | 4.8 4.8 out of 5 stars (2,620) |
| Global Trade Identification Number | 09010018100112 |
| Item Dimensions L x W x H | 40L x 40W x 20H millimetres |
| Item Highlight | High Airflow, Low Noise, 20mm Thick, for PC and Electronics Cooling, 3 Speed Settings 5000/4400/3700rpm 3-Pin |
| Item Weight | 50 Grams |
| Manufacturer | Noctua |
| Manufacturer Part Number | NF-A4x20 FLX |
| Max Rotational Speed | 5000 RPM |
| Model Number | NF-A4x20 FLX |
| Noise Level | 14.9 Decibels |
| Number of Items | 1 |
| Number of Packs | 1 |
| Power Connector Type | 3-Pin |
| Product Warranty | 6 year manufacturer’s warranty |
| Unit Count | 1.0 count |
| Voltage | 12 Volts |
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