Carol is correct. I have an Mx-88 that I have and still plays great. Original drive plays 720k floppies in eseq format.
I replaced my floppy drive with SD card drive Emulator that works perfect. It takes a lot of time and effort to copy and covert floppies and downloads to the SD card, but it's worth it.
If you have a bit of electronics knowledge and are familiar with computer floppy drives installation of Emulator not bad.
Eric