Question about Core X - 175908

So to get it right: What do you have to do to get the Razer Core X ready for use with a graphics card (e.g. a GTX 1070 with 8GB)? Do you just plug in the graphics card, switch it on, and go? Or are there still certain intermediate steps required? In my case, the PC used as a desktop is an Intel NUC, of course with a Thunderbolt 3 connection.