My experience watching a shop deal with transitioning to new Macs was that it was impossible to actually know a macbook+cable+device combo would work until you tried it. You could research all you wanted and there was still a chance it'd fail, or be glitchy and weird, unless you found someone with exactly the same combo to confirm that it worked fine.

Ditto dongles to connect to older devices. Will it work? No way to know, just try it and find out.