Lenovo SYSTEM BOARDS
5B21L33891
is compatible in the following Models:
Lenovo ThinkPad L Series laptops
ThinkPad L14 Gen 4 (21H1, 21H2) Laptop - 21H2S11H00
ThinkPad L14 Gen 4 (21H1, 21H2) Laptop - 21H2S6CX00