Which Coax cable when switching from AT&T UVerse?

I have an active UVerse account and am trying to set up my Xfinity gateway/router using the self-install kit before cancelling AT&T.  I had Comcast in this house many years ago.  I was told that a technician has done the required work on the line outside.  The orange cable  that I thought I needed to use is not a standard cable coax, the pin is far too wide.  Do I just need an adapter?  I don't think I can use the black cables which appear to be for the UVerse hookup.  Any ideas?  Thanks.

https://imgur.com/a/jGAzQeP 

.