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.

Nf A4x10 5v Pwm | Desertcart South Africa

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R1084

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Sold byAmazon South AfricaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🛠️ Silent power in a compact package — cool smarter, not louder!

COMPACT YET MIGHTY - Ultra-slim 40x40x10mm design fits tight spaces while delivering up to 4.8 CFM airflow for targeted cooling.
WHISPER QUIET POWER - Experience near-silent airflow at just 19.6 dB(A), perfect for focused workspaces and noise-sensitive setups.
PRECISION PWM CONTROL - Seamlessly adjust fan speed with 4-pin PWM technology, optimizing cooling efficiency without sacrificing silence.
PLUG PLAY VERSATILITY - Includes USB adapter cable and polarity protection for hassle-free integration into any 5V system.
ENGINEERED FOR LONGEVITY - Built with premium SSO2 bearings and advanced aerodynamic design, ensuring over 150,000 hours of reliable operation.

The Noctua NF-A4x10 5V PWM is a premium 40x40x10mm silent fan designed for 5V applications, featuring advanced Flow Acceleration Channels and an Acoustic Optimization frame. It delivers up to 5000 RPM with ultra-low noise levels of 19.6 dB(A), controlled via 4-pin PWM for precise speed management. Engineered with high-quality SSO2 bearings, it guarantees exceptional durability with over 150,000 hours MTTF, making it ideal for professional-grade cooling in compact environments.

Specifications

ASIN	B07DXS86G7
Air Flow Capacity	4.8 Cubic Feet Per Minute
Best Sellers Rank	#47,678 in Computers ( See Top 100 in Computers ) #382 in Computer Case Fans
Brand	Noctua
Brand Name	Noctua
Compatible Devices	Desktop
Compatible devices	Desktop
Cooling Method	Air
Cooling method	Air
Customer Reviews	4.8 out of 5 stars 1,127 Reviews
EU Spare Part Availability Duration	2 Years
Included Components	Noctua NF-A4x10 5V PWM, High Silent Fan
Item Dimensions L x W x H	40L x 10W x 40H millimeters
Item Type Name	Fan
Item Weight	80 Grams
Manufacturer	Noctua
Material Type	Polybutylene Terephthalate
Maximum Rotational Speed	300 RPM
Model	NF-A4X10 5V PWM
Noise Level	19.6 Decibels
Number of Items	1
Number of Packs	1
Part Number	NF-A4X10 5V PWM
Power Connector Type	4-Pin
Power connector type	4-Pin
Product dimensions	40L x 10W x 40H millimeters
UPC	841501110320
Voltage	5 Volts

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R1084

Duties & taxes included

In stock

Sold byAmazon South AfricaDelivered 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 South Africa.

Secure transaction

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