|In case you are unaware, this may help:-|
It rather suggests that a standard 3.5" floppy interface cable can be used, rather than the combination one that has connectors for both 3.5" and 5.25" drives
(5 in total, including one for the mobo).
A similar dual floppy drive was made by Teac, which I used in the past.
Please advise back how you get on.
Good Luck - Keep us posted.