I seem to recall that there where at least 2 different external floppy connectors.
There is the one that can still be found on current docks and port replicators, and then there was another older one.
In addition some ThinkPads support a floppy drive on the parallel port, using a special cable
--Tonko 16:46, 8 February 2006 (CET)
My T23 doesn't have a floppy connector, but my 770 does.