Single cabinet, 228 I want to add a 29key with a data port. I know how to program the ports but when installing the EDCM will I need to hook up the ribbon cable if there is just one cabinet?
What else do I have to do to tell the system that the card is there?

It's been awhile but any ribbon cable should be connected if a slot is available. The system senses the card, I believe it requires you to power down to insert.