Also, reportedly, the following external hardware exists:
* [[KDS Communicator 104]] (unclear if this is a "Modem" and/or a "Serial and Parallel interface") (in the latter case, "Parallel Interface" ''might'' refer to an 8bit printer port?)
* 8bit Printer Port (Pride Utilities) ([[Pride Utilities 8bit Printer Port|details]])
* 8bit Printer Port with Dual RS232 ([[Timatic Systems]])