Even though they typically came with Centronics ports, you could often add an additional interface. The Epson-compatible OKI printer I have can use an additiona

Even though they typically came with Centronics ports, you could often add an additional interface. The Epson-compatible OKI printer I have can use an additional interface board (of which I have one) and have both a serial and parallel interface. And of course there are also those console printers which uses serial like the DEC LA printer mentioned in a sibling comment.