Is there a way to get the number assigned to a COM port emulated by CDC?

[RandomInternetGuy]

It's up to the host OS.

On MacOS, for example, some machine processing of 'ioreg -l' will return the dev node and the serial number of the parts.

If [tio](https://github.com/tio/tio) works for you to list the node names with 'tio -l', you could look at the device discovery code and, within license, "do what tio does".

[sraposo]

what software are you running on the PC?
how do you tell it which COM port to use?

SW running on PC is proprietary and developed by a third party.

The current way to get the current COM port is referring to the Windows' Device Manager.