This cable is supplied, it is a Thunderbolt 2 to 1 meter long and which offer on the dock: HDMI, USB3 3, a gigabit ethernet, an output and an input sound and a Thunderbolt.
Everything works fine. I tried an external monitor but not HDMI Thunderbolt ...
Thus, in addition to the new connectors, on a work surface, cables are arranged around the station and did not invade the area around the mobile.