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.

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NF-A4x20 5V PWM

Product ID: 43512932

Details

Brand
Noctua
Compatible Devices
Desktop
Cooling Method
Air
Global Trade Identification Number
Material
Fibre-glass
Maximum Rotational Speed
5000 RPM

🔇Ultra-quiet 14.9 dB(A)

🕒150,000+ hours MTTF

⚙️5000 RPM max speed

NZ$56

Duties & taxes included

In stock

Sold byAmazon New ZealandDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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

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Description

🌀 Elevate your cooling game with silent precision — because your gear deserves the best.

SMART PWM CONTROL - 4-pin PWM ensures dynamic speed adjustment for optimal cooling and energy efficiency.
WHISPER QUIET POWER - Experience premium airflow with noise levels so low, you’ll forget it’s there.
COMPACT PRECISION FIT - Perfectly sized 40x20mm fan tailored for NVIDIA Jetson Nano and tight 1U spaces.
PLUG PLAY VERSATILITY - Comes with extension cables and OmniJoin adaptors for seamless integration with proprietary headers.
VIBRATION FREE OPERATION - Includes anti-vibration mounts to keep your setup silent and stable under load.

The Noctua NF-A4x20 5V PWM is a premium, ultra-quiet 40x20mm fan designed for specialized 5V applications like NVIDIA Jetson Nano and network equipment. Featuring a max speed of 5000 RPM, advanced acoustic optimization, and a 150,000+ hour lifespan, it delivers reliable, whisper-quiet cooling with smart PWM control and anti-vibration mounts for stable, efficient performance.

Specifications

ASIN	B071FNHVXN
Best Sellers Rank	#198 in Computer Case Fans
Brand Name	Noctua
Compatible Devices	Desktop
Cooling Method	Air
Customer Reviews	4.8 4.8 out of 5 stars (944)
Global Trade Identification Number	09010018100136
Item Dimensions L x W x H	1.57"L x 0.79"W x 1.57"H
Item Weight	84 Grams
Manufacturer	Noctua
Material Type	Fibre-glass reinforced PBT
Maximum Rotational Speed	5000 RPM
Model	NF-A4x205VPWM
Noise Level	14.9 Decibels
Number of Items	1
Part Number	NF-A4x20 5V PWM
Power Connector Type	4-Pin
Unit Count	1.0 Count
Voltage	5 Volts
Warranty Description	6 year manufacturer’s warranty

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NZ$56

Duties & taxes included

In stock

Sold byAmazon New ZealandDelivered 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 New Zealand.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Fatima A.

Best international shipping I've ever tried. Worth every penny!

3 days ago

Sneha T.

Received my product in pristine condition. Great service overall.

1 month ago

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