The F5 trick might work, indeed. Some vertical-market software (like warehouse inventory systems, auto mfrs, etc.) also have a dongle that is sold with the original CD-manuals and the CD may be looking for that 'dongle' to be installed - they used to be on a serial-port, or something were 'pass thru plugs' for parallel ports or even PS/2 plugs.
Hubby discovered one episode where an employee had usurped a company computer for a home one, then was selling it and then software, not realizing the dongle went with one particular CD.
For the original seller of the CD, the dongle-issue was some hot-shot security feature in decades past, but seriously - why bother? It's not like the Commies can inflitrate and assassinate presidents because of a Jag manual, with or without the dongle.
But it was a sign of "certified training" so only authorized garages had both the CD and the paid-for dongle... just another money scheme, no other purpose.