Your mystery card is a security device
MPPi, Ltd., 2200 Lehigh Ave., Glenview, IL 60025 Phone: 312-998-8401
Google a bit it only took 2 attempts for this one.
Device was known as pc-lock, you apparrently have the first model
pc lock II is much better put together.
I had guessed at it being a security card of some kind. I had found that
google hit, which is why I made that assumption.
You however are the first source I have found that can seem to confirm
that fact.
Any idea what it was used for, or was it like many security dongles, a
company bought them and included the checking code in their software, so
it could be for just about anything.
-chris
<http://www.mythtech.net>