CoCo1 before the 'F board' use pin headers on the motherboard and keyboard, with a ribbon cable between. Starting with the F board, every CoCo keyboard just sprouts a mylar ribbon. The physical keyboard mounts are all the same, and except for the version of CoCo2 melty that is literally melted together (no screws on the back) they will all work with this adapter.
We don't have a PCB, these are 'hand crafted'. It's reversible, zigging up or down is fine.