Ok in know the real name of the "other plug" that you have for a keyboard. AT plug right? Well sence I was just a gimply little snot nosed floppy trader I have called the the AT/DIN keyboard "FatFive" sence the first day I saw it. I think the exact sentence was "Hand me that keyboard with the FatFive plug on the end of it!". Given the name for the clear reason that the plug was Fat and it had Five pins.
Every person in the world that I have had contact with now calls this particular plug a "FatFive" and I have done extensive searches on it in google to come up with nothing. It resurfaced when I moved back to Florida from New York and heard a fellow at the Navy Base say my charished word. I started to tap at him to figure out where and when he started to use FatFive as I had never once meet that man. Turns out he went to school in Ill, with someone that I went to highschool with. Who had heard the term from me. It is a word virus and has now grown out of my control.
So the FatFive plug nick name was born way back in the day and is making a strong showing. Sweet!