Question about Noctua Nf-A4x20 5v Pwm

Hello, I plugged it into a usb socket on my Android 5.2 volt car radio to cool my car radio's processor so that when I switch on the ignition, it works with my car radio. I don't understand your question.
I would like to thank you for your help.

If nobody can help you, just try it out. I see here on Digitec a Purecrea Logic Level Converter 2-channel 5V / 3.3V 🤭