Noctua NF-A4x20 FLX Premium Quiet Fan – and similar items

? Noctua NF-A4x20 FLX Premium Quiet Fan ? 40x20mm, 3-Pin Brand: Noctua Model: NF-A4x20 FLX Product Type: Premium Quiet Computer Case Fan Category: Cooling Components / Case Fan UPC: 842431012642 EAN: 9010018100242 GTIN: 00842431012642 Manufacturer: Noctua GmbH (Austria) Country of Origin: Austria Warranty: 6-Year Manufacturer Warranty ?? Technical Specifications Feature Specification Fan Size 40 40 20 mm Connector Type 3-Pin Bearing Type SSO2 (Self-Stabilizing Oil-Pressure Bearing) Rotational Speed (10%) 5000 RPM (max) / 4400 RPM (with L.N.A.) / 3700 RPM (with U.L.N.A.) Airflow 5.5 m/h (3.24 CFM) ? 9.4 m/h (5.52 CFM) Static Pressure 1.95 mm H?O (max) Acoustic Noise 14.9 ? 19.6 dB(A) Input Power 0.6 W Input Current 0.05 A Operating Voltage 12 V DC MTTF (Life Expectancy) 150,000 hours Cable Length 20 cm + 30 cm extension cable Color Signature Noctua Brown Beige Weight 45 g ? Package Contents 1 Noctua NF-A4x20 FLX 40mm Fan 1 Low-Noise Adapter (L.N.A.) 1 Ultra-Low-Noise Adapter (U.L.N.A.) 1 3:4-pin Adapter Cable 4 Anti-Vibration Mounts 4 Fan Screws 1 30 cm Extension Cable ? Product Description The Noctua NF-A4x20 FLX is a premium quiet 40mm fan known for its exceptional cooling efficiency, near-silent operation, and long-term reliability. Featuring Noctua?s AAO (Advanced Acoustic Optimization) frame and Flow Acceleration Channels, it delivers superior airflow and pressure in compact systems. Ideal for small form factor builds (SFF PCs), network switches, NAS units, routers, DVRs, and other 40mm cooling applications. ?? Key Features Premium Quiet Performance ? Delivers exceptional cooling with ultra-low noise levels. 3-Speed Flexibility (FLX) ? Choose between 5000, 4400, or 3700 RPM via adapters. SSO2 Bearing ? Industry-leading bearing for ultra-smooth, long-life operation. Anti-Vibration Design ? Rubber corners minimize noise and vibration transfer. Compact 40x20mm Size ? Ideal for tight spaces in ITX systems or equipment cooling. Trusted Noctua Build Quality ? Backed by a 6-year warranty and Austrian engineering. ? Applications Mini-PC and SFF cooling 1U/2U servers Networking equipment 3D printers or DVR systems Replacements for 40mm industrial or router fans ? Item Used For: Noctua NF-A4x20 FLX, Noctua 40mm fan, quiet PC fan, 3-pin case fan, small form factor cooling, premium silent fan, Noctua brown beige fan, 12V cooling fan, FLX fan with adapters, SSO2 bearing fan, high performance quiet fan