So I restored this thing. It looked like a dog chewed on it when I got it. Here is my thread of me fixin' it up:
https://geekhack.org/index.php?topic=82730.msg2195002#msg2195002I shoved a teensy 2.0 in there with a cable I made. There was no soldering to the actual HHKB so you can plug the original cable in if you want (I will include it.)

Looking for trade offers. Artisans are cool. Topre/mx. Also would trade for a IBM 5150 keyboard of a Model F AT.