I need to control the speed using arduino (the arduino has a 500 hz pwm frecuency) can this fan handle this frequency for pwm or what it is?

You can change the PWM to FAST PWM for these applications on Arduino. Googalize "25k PWM Arduino code". The real issue is trying to find data specs on the PWM IC that Noctua uses. Googalize "Noctua PWM white paper" and you'll get all the info you need on their PWM specs. Target frequency is 25kHz but the acceptable range is 21kHz to 28kHz. GOOD LUCK.

Is there a 5vdc pwm temperature controller for this fan? been searching, but can't find.

No its controlled by the motherboard. I threw away the usb adapter cable, If it was used to power the fan, since usb is 5v, I would expect it to run at full speed. I used my fan on an NVIDIA NANO Single board computer

is there a usb version of the noctua 40x20 5v fan

No, there is no USB specific version available. But the kit does include a USB Type A to 4-pin female adapter cable.

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NF-A4x10 5V PWM

Product ID: 71150027

Details

Air Flow Capacity
8.9 Cubic Per
Brand
Noctua
Compatible Devices
Desktop
Cooling Method
Air
Material
Fibre-glass
Maximum Rotational Speed
5000 RPM

⏳>150,000 h MTTF reliability

🌀5000 RPM max speed

🔇Ultra-quiet 19.6 dB(A)

$36.60

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Description

🌀 Stay cool, stay ahead — the silent fan your setup deserves!

COMPACT YET MIGHTY - Ultra-slim 40x40x10 mm design fits anywhere without compromising airflow.
PRECISION PWM CONTROL - 4-pin PWM lets you fine-tune airflow up to a blazing 5000 RPM for optimal performance.
WHISPER QUIET POWERHOUSE - Experience premium cooling with barely-there noise at just 19.6 dB(A).
PLUG PLAY USB VERSATILITY - Includes USB power adaptor cable—cool your setup anywhere, anytime, even on the go.
BUILT TO LAST BUILT FOR PEACE OF MIND - Over 150,000 hours MTTF backed by a 6-year warranty ensures long-term reliability.

The Noctua NF-A4x10 5V PWM is a premium 40x40x10 mm quiet fan designed for professional-grade cooling with advanced acoustic optimization. Operating at up to 5000 RPM with ultra-low noise of 19.6 dB(A), it features 4-pin PWM speed control and polarity protection for 5V systems. Its USB power adaptor cable enables versatile use with USB ports and power banks. Built with fibre-glass reinforced PBT and anti-vibration mounts, it promises over 150,000 hours of reliable operation backed by a 6-year warranty.

Specifications

ASIN	B07DXS86G7
Air Flow Capacity	8.9 Cubic Meters Per Hour
Best Sellers Rank	#123 in Computer Case Fans
Brand Name	Noctua
Compatible Devices	Desktop
Cooling Method	Air
Customer Reviews	4.7 4.7 out of 5 stars (1,129)
Included Components	NF-A4x10 5V PWM
Item Dimensions L x W x H	1.57"L x 1.57"W x 0.39"H
Item Weight	80 Grams
Manufacturer	Noctua
Material Type	Fibre-glass reinforced PBT
Maximum Rotational Speed	5000 RPM
Model	NF-A4X10 5V PWM
Noise Level	19.6 Decibels
Number of Items	1
Part Number	NF-A4X10 5V PWM
Power Connector Type	4-Pin
UPC	841501110320
Unit Count	1.0 Count
Voltage	5 Volts
Warranty Description	6 year manufacturer’s warranty

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$36.60

Duties & taxes included

In stock

Sold byAmazon USADelivered 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 USA.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

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The customer service exceeded my expectations. Perfect for buying products you can't find elsewhere.

1 week ago

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

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