How do I resolve the missing USB Serial Port option for a Creality Falcon2 Laser Engraver on MacBook Pro?

There was an enormous Mass Extension event at 10.15 Catalina, after which everything had to be 64-bit capable or it would not run.

MANY add-on gadgets required new drivers after that. If none were forthcoming, the devices stopped working.

Grant Bennet-Alder wrote:

There was an enormous Mass Extension event at 10.15 Catalina, after which everything had to be 64-bit capable or it would not run.

Mass Extension, or Mass Extinction?

Also – Apple Silicon Macs cannot run Intel-only system code (e.g., Intel-only kernel extensions), and Apple has been making security changes in recent versions of macOS aimed at getting developers to abandon the use of kernel extensions in favor of system extensions that run with more limited privileges.

Have you checked with the LightBurn publisher for driver updates?

Have you checked with LightBurn about compatibility with your version of macOS?

spell checker strikes again, but this time with a subtle pun, rather than crazy-talk.