@EdKing
I haven't tried using a A2000 drive in an A500 but
as I remember it (sold my A500 some time ago) the
drive looks the same as my A3000 drive so should
probably work. I had an A1200 not to long ago with
a bad floppy drive. I replaced it with 880 external
drive. I just removed the external case and the drive
fit right in.
I guess what I'm saying is Commodore made very little
change in there floppy drives so chances are the A2000
drive will work in the A500.