I sometimes have to support old harsware still used in live systems and sometimes it feels like digital archaeology trying to find. I feel a massive wave of relief if I see them running an old enough version of our software that I can tell them lol nope unsupported.

Oldest thing I have had to support this month is a card reader from the late 90s. Essentially a scanner which scans printed templates and identifies where someone filled in the form on it. The customer was putting the cards in upside down.