Welcome to the forums, you've come the right place
As far as I know, I got the same cable as pictured when I built mine, just a 2x3 connector I think. Although I got my kit back in february, so maybe they've changed something....
It might be helpful if you could post a picture of the cable you got. It'll eliminate a lot of questions people are going to ask you.
It's always possible RRP sent you the wrong cable by mistake, when i got my kit some of the wires in the Z-probe loom were reversed, and I got the wrong sized tapered nut (which were easily fixed).