For use with the CSTM80 - do I need 3 pin or 5 pin?

Have been lurking around and finally made my first purchase on the Redsuns + Drop Red Samurai TKL. The set is beautiful but there was 1 keycap that came disfigured/damaged. That kinda killed my excitement. Put in a ticket for support but have not heard back from them yet. Hope they make this right..

Over the years of collecting mechanical keyboard switches, I’ve been lucky enough to have encountered dozens upon dozens of rare and unique ones that have stuck in my mind to this day. Prototypes, factory errors, and even a few switches so rare that there is literally zero documentation about them anywhere in the world all fill that personal list from top to bottom. However, I realize that talking about switches so far outside of most people’s reaches, and even sometimes my own grasp, doesn’t make for the most exciting of articles about switches. To this newest generation of keyboard enthusiasts, though, there is one pretty rare MX-style switch which has made its way to the top of everyone’s “must try” lists – Cherry MX Locks. These often undiscussed and even more rarely seen switches are something that few people have seen and even fewer have had the chance to try at a meetup before. However, the list of people who really know how these unique Cherry switches work is even shorter...