If you’ve still got an Apple Airport around, could USB printer share it off there as a stop gap before filling in all the other features with your connector project.

Makes me wonder if Samsung and HP made some sort of agreement back then to license some LaserJet tech. Sounds like it if HP support is in the offerings as a form of escalation path, but that’s mostly a guess. Never got much insight into the printer side of the house during my HP years.