go to each pc and type in this command
(er, start, run, cmd)
do not put anything after that.
do a screenshot or screenscrape or just type the response for each pc.
list which pc is which - ie, bosses, mine, yours, etc.
r click my computer on each pc
list whats there, sans the stuff you just listed in the net use, above.
lastly, physically, what is plugged into each pc
boss has humongous external thingy, mine has nothing, etc.