Sorry for the late reply and the terrible pictures, I did the best I could with my phone.
These boards aren't even that old, I think according to the date code, 2009. But one was a mod-8 jack and the other was some sort of odd scan gun serial type connector. Both boards internally look the same ...
Does anyone have a pinout for a ML4100 PS/2? Picked up some oddball terminal ones in an auction. They look like the older PS/2 controllers but the wiring colors correspond to USB.
I don't have a PS/2 version on hand to check the pins. Thanks.