I’ve got a system where I would like to be able to confidently identify that the COM port is a AK4XRS485. I can’t use the vid, pid, or manufacturer because they are all shared between every device that uses the FTDI drivers on Windows (which I have several different ones). I’ve noticed that the serialNumbers across the handful of boards I have are all in the form AK9E**** are those 4 digits shared across all of these, or was it just a coincidence
