I've got a PC external drive somewhere that plugs into the PC parallel port. Mine's a RadioShack/Tandy model. Mine's a 5.25 and I picked up a bundle of 5.25 1.2MB media, and made a set of slackware install disks, thinking I could use it to put slack on a 486 lappy with a fried internal drive... I then realised, that slackware couldn't be persuaded to read the drive, doh, only had a dos driver for it. HDD was too small to load it up with images then install. Some of the smaller subnotebooks had hardware and BIOS support for a parallel port floppy. Some early 386 era ones had support for them as a B drive, at that time 1.44 was mostly confined to PS/2 machine and a lot of software came on 1.2MB (that period didn't last very long, if you blinked you missed it)
Anyhoo, could quite possibly be a PC drive. Though you'd expect in that case to see some buffers and a PC floppy controller chip in there somewhere.
There is a slight chance it's SCSI, but then it should have a jumper block or hex wheel switch on the back for the ID, unless it was hard set. Also it would likely have a z80 and a floppy controller chip inside. These were mostly used on VMS and Unix hardware.
