[o_x]

They both have 1x Thunderbolt 3, but yes, intel allows for 4K panel upgrade

[akvadrako]

T14 does not have thunderbolt.

https://www.notebookcheck.net/Lenovo-ThinkPad-T14-T14s-X13-A...

https://nbreview.de/wp-content/uploads/2020/02/ThinkPad-T14-...