That reminds me of a tale I heard when on a course at the Unisys training building in Milton Keynes back in the late 1980s. Their Unisys (ex-Burroughs) B25 systems (which were actually rebadged Convergent Technology NGENs) were built as clip-together modules where a module might be a CPU unit, a hard disk unit, a 5.25 floppy drive unit etc. The idea was that you could start with a small system and built it up as required, even to the point of exchanging the CPU module for a more powerful one such as upgrading from a 286 to a 386 (well, it was the 1980s!).
Someone had apparently been sold a second hand system and couldn't understand why it couldn't read the floppies and phoned up Unisys for some support. The engineer trying to help had trouble understanding what was going on for a while as the customer claimed the floppy slot didn't have an open/close lever. Finally, it dawned on the engineer that the customer had been sold two units, none of which contained a floppy drive, and they were trying to insert the floppies into the slim gap between the two units they did have!
For those who have never seen these machines before there's a picture showing two units clipped together here: https://en.wikipedia.org/wiki/Burroughs_B20. The slot the customer was shoving floppies into was the one directly below the centre of the monitor in that pic.
