Scott Ware <s-ware(a)nwu.edu> writes:
  The main unit is a single piece about the size of a
Processor Technology
 Sol.   
I believe this may be a Big Clue.  Isn't the Expander one of the
things that Lee Felsenstein designed between Processor Technology and
Osborne?  I also seem to remember that it was primarily marketed in
Europe.
Good catch!
-Frank McConnell