The only 4-pin screw terminal connectors that we sell are for the PMDX-340. Are you talking about the 4-pin connector that you install on the Geckodrive unit for the motor wires? If so, these came with the PDMX-132. I can look around the lab and see if we still have any. If so, we can send them back to you with your PMDX-422 board(s) when you send them in for repair.
Bob