USB 5.25" floppy drive

Ok, now you have to promise not to laugh too hard. Does anyone know if it's possible to make a USB Floppy Disk Drive. Oh, ...... I mean a 320k/360k 5.25" USB floppy disk drive. [hey, you promised .....] I occasionally need to transfer things between my PC and an old S-100 system, or a Z-100. The Z-100 has 5.25" disks, but not 3.5". So ..... I actually wondered if one could buy a USB 3.5" floppy and use the "controller card" with a 5.25" drive, since the interface is nominally the same. However, these mostly use notebook drives, and while they may have the same electrical interface, the physical interface is a flex cable. Worse, some of the USB 3.5" drives may "integrate" the USB controller and drive mechanism so that there is no standard floppy interface at all. There may also be software issues. Anyway, it seems like a question to post to this group, and in a few other places. [Next I will want a USB 8" drive ..... which, actually, with the right software, would not be a bad idea !!]