This reminds me of an old used printer I bought, long ago. Sadly, I don't recall the printer model, but I think it was built in the 1980's. When I opened it u

This reminds me of an old used printer I bought, long ago. Sadly, I don't recall the printer model, but I think it was built in the 1980's. When I opened it up to clean it, I discovered it was full of extra circuit components (with "In-Q-Tel" labels). It appeared to be a special TEMPEST-shielded unit.