I have an AT to PS/2 adapter. I don't think motherboards will stop having PS/2 ports in the foreseeable future, and arguments can be made that PS/2 is still the superior connector for keyboards in terms of latency, simultaneous key presses, using hardware interrupts instead of software, and general authenticity of using a connector from the 80s to connect an 80s keyboard.
My current PC doesn't have a PS/2 port. It's a Ryzen build.
I have a Unicomp but I'm disappointed that the resistance varies a lot from key to key. Maybe I got a bad unit?
I'm thinking so. I have a unicomp and I don't notice a difference between the keys.