How strange. On my system it shows as a Rambo board, didn’t have to do anything to make it work. I’m surprised it would be a problem, as USB-Serial is a standard device on OSX and Linux, and generally they just work. However, searching around it sounds like there are a lot of devices having issues with it. It sounds like some people have been able to get things working by rebooting into recovery mode and disabling System Integrity Protection, at least temporarily. It might be worth a try in your case to get things working. From what I’ve read, you can turn it back on after things are working. I found some instructions…
boot mac into recovery mode (command+r). hold it down until you see the mouse cursor
probably says enabled
After the reboot, try connecting the printer, maybe reinstall Cura. You can re-enable the protection stuff the same way, just change “csrutil disable” to “csrutil enable”.
Yes, I should have been more clear that the Ocroprint setup is on a Raspberry Pi. I like being able to send a print to it and not have to worry that the computer will reboot or similar. I also like remote monitoring with the camera.