Urgent Assistance Needed: USB Connection Issues with Holybro Pixhawk 4 Boards

I am writing to seek expert advice and assistance with a persisting issue I am experiencing with two of my Holybro Pixhawk 4 boards.

Recently, I have encountered problems with the USB connections of these boards. When I attempt to connect them to my computer, the corresponding COM port fails to appear as expected. This has been quite perplexing, and despite my best efforts, I have been unable to identify or resolve the problem.

FYI @mogu