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.

Noctua Nf A4x10 5v Pwm | Desertcart South Korea

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Description

🌀 Silent power in a compact form—cool smarter, not louder.

COMPACT YET MIGHTY - Ultra-slim 40x40x10 mm design delivers efficient cooling without bulk, ideal for tight PC builds or 3D printers.
WHISPER QUIET POWER - Experience near-silent airflow at just 19.6 dB(A), perfect for focused workspaces and noise-sensitive environments.
PRECISION PWM CONTROL - 4-pin PWM interface with advanced speed regulation ensures optimal cooling performance tailored to your device’s needs.
VIBRATION FREE STABILITY - Anti-vibration mounts and OmniJoin adaptor set guarantee secure, silent operation, elevating your setup’s professionalism.
VERSATILE USB COMPATIBILITY - Includes USB power adaptor cable for seamless integration with USB ports, power banks, and smartphone chargers—cool anywhere, anytime.

The Noctua NF-A4x10 5V PWM is a premium 40x40x10 mm computer fan engineered for ultra-quiet, efficient cooling. Operating at up to 5000 RPM with a noise level as low as 19.6 dB(A), it features advanced PWM speed control, polarity protection, and versatile USB power compatibility. Designed with anti-vibration mounts and high-quality materials, it offers over 150,000 hours of reliable operation, making it the go-to choice for professionals seeking silent, compact cooling solutions.

Specifications

ASIN	B07DXS86G7
Air Flow Capacity	4.8 Cubic Feet Per Minute
Best Sellers Rank	#125,873 in Computers & Accessories ( See Top 100 in Computers & Accessories ) #694 in Case Fans
Brand Name	Noctua
Compatible Devices	Desktop
Cooling Method	Fan
Country of Origin	USA
Customer Reviews	4.8 4.8 out of 5 stars (1,136)
EU Spare Part Availability Duration	6 Years
Included Components	NF-A4x10 5V PWM
Item Dimensions L x W x H	40L x 10W x 40H Millimeters
Item Highlight	High Airflow Low Noise, 5V, 10mm Slim Fan, for Ventilation and Electronics Cooling, USB-A Power Adaptor, 5000rpm 4-Pin PWM
Item Weight	80 Grams
Manufacturer	Noctua
Material Type	Fibre-glass reinforced PBT
Max Rotational Speed	5000 RPM
Model Number	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
UPC	841501110320
Unit Count	1 Count
Voltage	5 Volts

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Noctua NF-A4x10 5V PWM

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Description

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Common Questions