Pretty much any USB dock with a display will be DisplayLink. I'm not aware of any other brand.

I was looking at a HP one since it was one of few that could do resolutions greater than 2048x1152 or so. None can do proper UHD (at 60Hz) yet. For now I just have a big 10 port USB3 hub and have my old DisplayLink unit running off that, along with my scanner, keyboard, mouse, drive dock, 3 or 4 USB to serial adapters, a DVD writer. Single plug into laptop and it all connects fine (plus power and gigabyte Ethernet which I have directly on the machine so just 3 connections). It does take a few seconds to register everything.

There is most definitely an i7 XPS13 13 if you want. It shows on the Australian Dell site. Quite a price premium though you do get things like Intel wireless too.

http://www.dell.com/au/p/xps-13-9343-laptop/pd

Although the best two are i7.

Make sure you are looking at the 9343 XPS13. There is an older 9333 version it seems. It might come with the Ethernet adapter.