Probably the Radio...
I am guessing the ports you are looking at are for the Radio. If you have the Axxera (sorry if I misspelled it here), it does "screen mirroring" from your phone to the screen allowing you to view your screen on the radio and interact with it.
For me, it took a while to get working because I eventually found out that they forgot to connect the ports on the back of the dash to the radio, the cables were just hanging there. Once I was able to get those plugged in, I was able to connect my phone and use it for Google Maps. I do not actually use it any more, I have a tablet on my dash that I use for things like that now.
Hope that helps.
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