Andrew,
On 24 Dec 2019, at 3:50 PM, andrew.woolman <apwool@...> wrote:
Well, new USB interface arrived today. Given that everything is already installed and working on the computer, should I just be able to swap it in and go, or do I need to re-install driver?
No need to reinstall and it's almost certain that port will stay at cu.SLAB_USBtoUART, so just give it a try.
But system console is your friend...
If you get the same symptoms, you've ruled out the NCE USB as the cause :(
Dave in Australia