The annoying situation , due to thousands of make/break connection to a
laptop and eventual wear. Where , despite cleaning of contacts, movement
of the cable often breaks contact.
A small piece of that protective slide of a 3in floppy disk, cut to L in
cross section and wide enough to feed in the "gap" between USB line plug
plastic slab of insulation and the metal shroud. So the short return
part of the L is against the end of the plastic slab, just enough width
to act as an end stop to loosing fully in the gap.
May of course accelerate failure of the chassis socket part , but at
0.15mm thick metal , perhaps not, we'll see.


--
Monthly public talks on science topics, Hampshire , England
http://diverse.4mg.com/scicaf.htm