For the first time since 2015 Lenovo has developed a new case for its business-oriented ThinkPad Yoga convertible. The Lenovo ThinkPad X390 Yoga is slimmer than its predecessor and offers improved CPU performance. However, the convertible lacks several features available in the normal ThinkPad X390. We have done an in-depth review of the convertible laptop with an Intel Whiskey Lake processor.
https://www.notebookcheck.net/Lenovo-ThinkPad-X390-Yoga-i7-FHD-Convertible-Review.423741.0.html
Does the TB3 port is 2 or 4-lane? The web is laden with conflicting info.