I have an X270 with an LTE card. I've also helped set up a 3rd and 4th-gen X1 Carbon with an LTE card for a friend. I know Dell also offers LTE antennas in so

I have an X270 with an LTE card. I've also helped set up a 3rd and 4th-gen X1 Carbon with an LTE card for a friend. I know Dell also offers LTE antennas in some of their higher-end Latitude laptops.