Close. It reads N64 memory cards, something to the effect of using stats from your home console games to the arcade ports or vice versa. I think these are usually found on sports games like Blitz or Hangtime.
Looks like Lyons beat me to it. I have no use for it, but Ill offer $10 shipped just to add it to my N64 stash. If someone has a use for this though, I'm sure youll get a better offer.