Can someone help me out with pictures on what the actual linkage of 2 NBA Fastbreak games looks like? I mean inside the cabinets.

I bought an NBAFB and i found some sort of cable inside the cabinet, thought it was a link cable. Not sure though, looks like the kind of cable you could use for computers. And there's another NBAFB for sale not that far from me, so i might want to buy that one too and link them. Thing is, I'm not a technician at all, so i'll be needing some visual references on how to link them.

And I suppose I'll be needing another set of roms too, right?