Thanks for the pics, Supamax!
I've certainly seen nothing as well sealed up as those dongles!
Originally Posted by Supamax
I suppose I could open the shell and then sink the black resin part in Acetone, but I fear that it could corrode the external part of the components...
If you are serious about trying this, immerse a few selected components and types of sleeving in acetone first to see whether they are eroded by the solvent.
If they survive, there is a good chance that those inside the encapsulation will do so as well.