CDN$ 19.78
FREE Delivery on your first order. Details
Arrives: Friday, Oct 2
Fastest delivery: Today
Order within 4 hrs and 40 mins
In Stock.
Your transaction is secure
We work hard to protect your security and privacy. Our payment security system encrypts your information during transmission. We don’t share your credit card details with third-party sellers, and we don’t sell your information to others.

Have one to sell?

Noctua NF-A4x20 5V PWM, Premium Quiet Fan, 4-Pin, 5V Version (40x20mm, Brown)

4.8 out of 5 stars 200 ratings

Price: CDN$ 19.78 FREE Delivery on your first order. Details
New (6) from CDN$ 19.78 & FREE Shipping on orders over CDN$ 35.00
  • Premium quiet fan, 40x40x20 mm, 5V, 4-pin PWM, max. 5000 RPM, max. 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 NVIDIA Jetson Nano, 1U applications or replacing fans in network and storage equipment (routers, switches, NAS etc.) or other devices such as DVRs
  • 5V 4-pin PWM version (5000rpm maximum speed) for 5V applications with PWM control
  • Includes anti-vibration mounts, fan screws, extension cable and OmniJoin adaptor set for connecting the fan to proprietary fan headers

Frequently bought together

  • Noctua NF-A4x20 5V PWM, Premium Quiet Fan, 4-Pin, 5V Version (40x20mm, Brown)
  • +
  • Waveshare Power Supply Applicable for Jetson Nano 5V/4A OD 5.5mm ID 2.1mm
  • +
  • Waveshare AC8265 Wireless NIC Module for Jetson Nano Supports 2.4GHz / 5GHz Dual Band WiFi and Bluetooth 4.2
Total price: CDN$71.76
Buy the selected items together

Special offers and product promotions

  • Amazon Business : For business-only pricing, quantity discounts and FREE Shipping. Register a free business account
  • Exclusive access to cleaning, safety, and health supplies. Create a free business account to purchase

Have a question?

Find answers in product info, Q&As, reviews

There was a problem completing your request. Please try your search again later.
All Product Information Customer Q&A's Customer Reviews

Your question may be answered by sellers, manufacturers, or customers who purchased this item, who are all part of the Amazon community.

Please make sure that you've entered a valid question. You can edit your question or post anyway.

Please enter a question.

System Requirements

  • Platform: Not Machine Specific
  • Media: Personal Computers
  • Item Quantity: 1

Product information

Technical Details

Additional Information

Product Description


Featuring advanced aerodynamic design measures such as Flow Acceleration Channels and an AAO frame, the NF-A4x20 5V PWM is a PWM enabled 5V variant of Noctua’s highly optimised, premium quality quiet 40x20mm 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, the NF-A4x20 5V PWM is a premium choice for demanding 5V applications that require PWM control.

pwm flx 5v 5v
NF-A4x20 PWM NF-A4x20 FLX NF-A4x20 5V PWM NF-A4x20 5V
Connector 4-pin PWM 3-pin 4-pin PWM 3-pin
Voltage 12V 12V 5V 5V
RPM: Max: 5000 / Min: 1200 5000 Max: 5000 / Min: 1100 5000
RPM with L.N.A. 4400 4400 - -
RPM with U.L.N.A. - 3700 - -
Acoustical Noise 14,9 dB(A) 14,9 dB(A) 14,9 dB(A) 14,9 dB(A)
Acoustical Noise with L.N.A. 12,2 dB(A) 12,2 dB(A) - -
Acoustical Noise with U.L.N.A. - 8,5 dB(A) - -
Size 40x40x20 mm 40x40x20 mm 40x40x20 mm 40x40x20 mm

Customer Questions & Answers
Pages with related products. See and discover other items: silent fan, desktop case, 40mm fan