The machine shop I work at has a wire EDM we use for tool making. It is controlled by an NEC Model PC-9801UV personal computer. It has two NEC FD1137D floppy drives. Floppy one runs the system disk, and floppy two runs the user disk. Floppy two has failed. These are unique drives in that the data cable connector has the 1 pin reversed from a normal floppy, and there is no twist in the cable between floppy one and floppy two. I have had no luck locating replacements, and would welcome any helpful ideas.