Also, I went back and checked the first page of this thread:
Those of you with Saturn 3-in-1's: If you aren't already aware, they suffer from the same problem that NES Game Genies did, and cause the same issue in regards to widening the pins on the connector, and Saturn connectors can't be fixed like NES ones can be. If all you ever intend to use in your Saturn is the AR 3-in-1, you're (probably) going to be fine, but if you have any intention of using a legit Sega save card or anything like that, you might want to think again.
On the plus side, if any of you score one with a parallel port adapter on top, they can be reflashed to be full mod chips for the Saturn, so that's a bonus.
Just wanted to warn you all.