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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🌬️ Stay Cool, Stay Quiet!

DURABLE DESIGN - Built to last with an impressive >150,000 hours MTTF.
HIGH SPEED PERFORMANCE - Achieve optimal airflow with a powerful 5000 RPM capability.
WHISPER QUIET OPERATION - Experience near-silent cooling with a max noise level of just 19.6 dB(A).
COMPLETE INSTALLATION KIT - Includes everything you need: anti-vibration fixings, screws, and an OmniJoin adapter set.
VERSATILE USB CONNECTIVITY - Easily power your fan via USB ports, power banks, or even smartphones.

The Noctua NF-A4x10 5V PWM is a premium 40x10mm fan designed for ultra-quiet operation and high performance. With a maximum speed of 5000 RPM and a noise level of just 19.6 dB(A), it’s perfect for applications requiring silent cooling. The fan comes with a USB power adapter for versatile connectivity and includes all necessary installation accessories.

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