This article explains how to connect a GoPro to your computer using a micro USB cable. It also includes information on how to connect your GoPro and computer using a microSD card.
GoPro Hero 9: How to Transfer Photos and Videos to Windows Computer/Laptop
There are a few ways to connect your GoPro to your computer and start capturing your best footage today. The easiest way to connect your GoPro to your computer is via the transfer cable that came with your GoPro. Most GoPro models use a USB to micro USB cable, the same cable used with most Android phones.
Turn off your GoPro camera before connecting it to your computer. Press the power button on the top or front of your camera and turn it off.
Connect the micro USB cable to your GoPro camera, find a free USB port on your computer and connect the two devices.