Lenovo SYSTEM BOARDS
5B21N89367
is compatible in the following Models:
Lenovo ThinkPad X Series laptops
ThinkPad X1 Carbon 12th Gen (21KC, 21KD) Laptop - 21KDS0YU00
ThinkPad X1 2 in 1 Gen 9 (Type 21KE, 21KF) Laptop - 21KE001
ThinkPad X1 2 in 1 Gen 9 (Type 21KE, 21KF) Laptop - 21KECTO1WW