I have a non-working FD-54B-02-U that I would really like to get working. I was hoping someone had a non-working one I can purchase for parts. I think these were commonly used in the Tandy 1000's. Mine seems to function, but it's missing the head lift plate so the head won't lift off the floppy when the knob is opened. So as long as it has that I think I'm golden. I'm in Utah. Image from RetroCMP.de