So my curiosity got the better of me, and I went a'Googling to find out what the heck a "Jasmine MegaDrive" was. I was hoping to find out it was a reasonably common platform like the 100MB LS-120 floppies, or MO drives. The grand total of eight Google hits tells me otherwise.

http://www.emulatorarchive.com/Archives/Samplers/E3Overview/E3Upgrades/e3upgrades.html

Jasmine Mega Drive
E-mu Systems recommended this 5.25" 10 MB floppy drive for backing up EIII sound bank data in the summer of 1988. It was manufactured by Jasmine Technologies in the USA. A 4 MB bank loaded in 35 seconds, and the drive sold for $999. The floppy diskettes cost $36. This drive never made it as a popular format, but did anyone use this?

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InfoWorld 25 May 1987

Jasmine to ship 10MB SCSI Disk Drive in June
A removable-media, 10-megabyte SCSI disk drive ... the $999 units use 5-1/4-inch cartridges containing floppy media in a hard shell ... The drive fits underneath the Mac Plus and SE. The cartridges ... sell for $39.95 each.

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Sounds like not a lot of these were sold. Suggestions: ask on LEMswap, Emu Emulator forums/lists, etc, and stick it on ebay Saved Searches till one (hopefully) turns up.