Lenovo SYSTEM BOARDS
5B20W73021
is compatible in the following Models:
Lenovo ThinkPad X Series laptops
ThinkPad X1 Titanium (20QA, 20QB) Laptop - 20QA001DAU
ThinkPad X1 Titanium (20QA, 20QB) Laptop - 20QA001EAU
ThinkPad X1 Titanium (20QA, 20QB) Laptop - 20QA001FAU
ThinkPad X1 Titanium (20QA, 20QB) Laptop - 20QA0072AU
ThinkPad X1 Titanium (20QA, 20QB) Laptop - 20QA0073AU
ThinkPad X1 Titanium (20QA, 20QB) Laptop - 20QAS00R00
ThinkPad X1 Titanium (20QA, 20QB) Laptop - 20QBS0A100