Can these be wired to a usb connector and run off a usb wall charger?

Yes. I run mine off of the gpio pins on a raspberry pi. That's the same concept.

Does this noctua nf-a4x20 5v pwm premium-quality quiet 40mm fan come with the mounting screws?

Yes, it comes with screws a couple of different connectors for attaching it to 3 and 4 pin connections also some rubbery plug things to pull through the mount holes.

Can a 3.3v PWM signal be used to control fan speed?

Yes, a 3.3V logic (PWM) signal will control this fan. I use an Arduino DUE board to control this fan. The DUE puts out 3.3V logic signals.

Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

Help Track order

Account Cart

Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

Help Track order

Account Cart

NF-A4x20 5V PWM

Product ID: 43512932

Details

Brand
Noctua
Compatible Devices
Desktop
Cooling Method
Air
Material
Fibre-glass
Maximum Rotational Speed
5000 rpm
Noise Level
14.9 db

⚡5V 4-pin PWM control

🌀5000 RPM max speed

🔇Ultra-quiet 14.9 dB(A)

EC$98

Duties & taxes included

In stock

Sold byAmazon Saint Vincent and the GrenadinesDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Saint Vincent and the Grenadines.

Secure transaction

Description

🌀 Stay cool, stay ahead — silent power in a compact form!

COMPACT YET MIGHTY - 40x40x20 mm size fits perfectly in tight spaces like NVIDIA Jetson Nano and 1U servers.
PRECISION PWM CONTROL - Seamlessly adjust fan speed up to 5000 RPM for tailored airflow and efficiency.
PLUG PLAY VERSATILITY - Includes anti-vibration mounts, OmniJoin adaptor, and extension cable for effortless installation.
WHISPER QUIET POWERHOUSE - Experience top-tier cooling with barely-there noise at just 14.9 dB(A).
AWARD WINNING AERODYNAMICS - Flow Acceleration Channels and Acoustic Optimisation deliver superior cooling performance.

The Noctua NF-A4x20 5V PWM is a premium 40mm high-performance fan designed for ultra-quiet, efficient cooling in compact electronics. Featuring a max speed of 5000 RPM, advanced aerodynamic design, and PWM control, it’s ideal for devices like NVIDIA Jetson Nano, network equipment, and 1U servers. With a noise level as low as 14.9 dB(A) and a 6-year warranty, it combines reliability with whisper-quiet operation.

Specifications

ASIN	B071FNHVXN
Best Sellers Rank	#125 in Computer Case Fans
Brand Name	Noctua
Compatible Devices	Desktop
Cooling Method	Air
Customer Reviews	4.8 4.8 out of 5 stars (965)
Global Trade Identification Number	09010018100136
Item Dimensions L x W x H	1.57"L x 0.79"W x 1.57"H
Item Highlight	High Airflow Low Noise, 5V, 20mm Thick Fan, for Ventilation and Electronics Cooling, With OmniJoin Adaptor, 5000rpm 4-Pin PWM
Manufacturer	Noctua
Material Type	Fibre-glass reinforced PBT
Maximum Rotational Speed	5000 rpm
Model	NF-A4x205VPWM
Noise Level	14.9 db
Number of Items	1
Number of Packs	1
Part Number	NF-A4x20 5V PWM
Power Connector Type	4-Pin
Unit Count	1 Count
Voltage	5 volts
Warranty Description	6 year manufacturer’s warranty

Common Questions

Are the products genuine and authentic?+

Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

How long does delivery take and is it reliable?+

Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

What is Desertcart? Is it safe to order from?+

Desertcart is an international e-commerce platform operating since 2014. We securely process thousands of orders globally each day. Every product goes through our quality verification process before delivery, and we provide end-to-end order tracking, 24/7 customer support, and a comprehensive returns policy to ensure a safe shopping experience.

How is product pricing calculated?+

Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Meera L.

Smooth transaction and product arrived in perfect condition.

3 weeks ago

Imran F.

Very reliable shop with genuine products. Will definitely buy again!

2 weeks ago

View all Trustpilot reviews

Shop Global, Save with Desertcart

Value for Money

Competitive prices on a vast range of products

Shop Globally

Serving millions of shoppers across more than 100 countries

Enhanced Protection

Trusted payment options loved by worldwide shoppers

Customer Assurance

Trusted payment options loved by worldwide shoppers.

Desertcart App

Shop on the go, anytime, anywhere.

EC$98

Duties & taxes included

In stock

Sold byAmazon Saint Vincent and the GrenadinesDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Saint Vincent and the Grenadines.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Anjali K.

The product quality is outstanding. Exactly what I needed for my work.

1 month ago

Ayesha M.

The product exactly matches the description. Very satisfied with my purchase.

5 days ago

View all Trustpilot reviews