The Microsol CDX-2 is a floppy disk interface that supports one or two drives, using a standard PC FDD cable (with twist). Drives need to be powered externally, the cartridge does not supply power.
Microsol CDX-2 - MSX Wiki
Retro gamer №153 by Michel França - Issuu
Addgene: eMscL G22S
Digital Design Drive-Interface DDX - MSX Wiki
Olympia PHC-2 - MSX Wiki
Olympia PHC-2 - MSX Wiki
Retro gamer №153 by Michel França - Issuu
Digital Design Drive-Interface DDX - MSX Wiki
Microsol - CDX-2, Media
MSX - Wikipedia