Noctua NF-A4x20 5V Premium 40x20mm Cooling Fan - Quiet 5V Edition (New)

Product Overview

The Noctua NF-A4x20 5V is a dedicated 5V premium 40x20mm cooling fan designed for quiet, high-efficiency performance in compact devices. It features Flow Acceleration Channels and Noctua's Advanced Acoustic Optimisation (AAO) frame for aerodynamic efficiency, SSO2 (Self-Stabilising Oil-pressure) second-generation bearing for long-term stability and wear resistance, and integrated anti-vibration pads with NA-AV3 silicone mounts to minimize vibration transfer. The OmniJoin™ adaptor set allows direct splicing into proprietary fan headers for easy installation in 3D printers, routers, network switches, and custom storage builds. Rated at 5000 RPM and just 14.9 dB(A). Backed by Noctua's 6-year manufacturer warranty. Designed in Austria, made in China. New in original retail box. If you're building out a custom rig or upgrading compact electronics, you'll find more tech components in my Electronics & Gadgets and Smart Home & Tech collections — and browse Rare Finds & Collectibles for more enthusiast-grade liquidation picks.

⚠️ Important: This is a 5V fan. Do not run at 12V — it will be damaged if connected to standard 12V PC motherboard fan headers.

Key Features & Specifications

• Brand: Noctua (Designed in Austria)
• Model: NF-A4x20 5V
• Dimensions: 40 x 40 x 20 mm
• Operating Voltage: 5V DC (do not use with 12V headers)
• Max Input Power: 0.5W
• Rotational Speed: 5000 RPM (±10%)
• Acoustical Noise: 14.9 dB(A)
• Bearing: SSO2 (Self-Stabilising Oil-pressure, 2nd generation)
• Connector: 3-pin (with 3:2 pin adaptor included)
• Frame: AAO (Advanced Acoustic Optimisation) with Flow Acceleration Channels and Stepped Inlet Design
• Vibration Dampening: Integrated anti-vibration pads + NA-AV3 silicone mounts
• MTTF: >150,000 hours
• Warranty: 6 years manufacturer warranty
• Certifications: CE, RoHS
• Country of Origin: China (Designed in Austria)
• Condition: New in original retail box

What's Included

• 1 Noctua NF-A4x20 5V fan
• OmniJoin™ adaptor set
• 3:2 pin adaptor
• Extension cable
• NA-AV3 anti-vibration mounts
• Fan screws

Limited Liquidation Release

This is a 100% brand-new, verified liquidation clearance find. My sourcing allows deep outlet pricing, but quantities are strictly limited — once it's gone, it's gone for good. Some units may arrive without a retail box due to the nature of liquidation sourcing, but no items are ever sold past their Best By or expiration date.

More4less Outlet Promise

• Real Product Photos: Every listing includes at least one actual photo taken by me (Chad) of the exact unit in my Burlington, KY facility. Additional lifestyle imagery is AI-generated for visual context only — the real product photo(s) always show the exact item headed to your door.
• Brand New Condition: Every unit personally verified before shipment.
• Free Shipping via USPS Ground Advantage with tracking.

First Sale Doctrine & Non-Affiliation

This product is resold under the First Sale Doctrine (17 U.S.C. § 109(a)). More4less Outlet is not affiliated with, sponsored by, or endorsed by Noctua or Rascom Computerdistribution Ges.m.b.H. All trademarks remain the property of their respective owners.