I'm 90% sure of it being a converter of IBM AT keyboard and mouse to macintosh, and not the other way around. The closest information I can find of a different but similar unit is here
http://www.manualslib.com/manual/136868/Qvsr-Console-Converter-Cv-160.html#manual
I have seen a device like this but it was a little newer with only adb and ps/2 connectors. What sort of jack is that on the front of the device, is that a BNC connector? If so it's closer to that one in the manual there than I thought.
http://www.manualslib.com/manual/136868/Qvsr-Console-Converter-Cv-160.html#manual
I have seen a device like this but it was a little newer with only adb and ps/2 connectors. What sort of jack is that on the front of the device, is that a BNC connector? If so it's closer to that one in the manual there than I thought.