You put the card in the slot and stick the shunt on the jumper pins.
Nothing happens. You might need to stick a punched card in there, probably allowing the holes in the card to affect the flow of current through the circuits. And to punch cards you'll need to get a designix somehow.
Hey check it out. Every week we'll be revealing some new troll characters from Hiveswap until Act 2 is out. Follow the Troll Call here, and meet the first two here. Expect a few more surprises like this to drop in coming weeks.