Lenovo SYSTEM BOARDS
5B21L38637
is compatible in the following Models:
Lenovo ThinkPad X Series laptops
ThinkPad X1 Nano Gen 3 (21K1, 21K2) Laptop - 21K1000GAU
ThinkPad X1 Nano Gen 3 (21K1, 21K2) Laptop - 21K1CTO1WW