Lenovo SYSTEM BOARDS
5B21L75682
is compatible in the following Models:
Lenovo ThinkPad X Series laptops
ThinkPad X13 Gen 4 (21J3, 21J4) Laptop - 21J3CTO1WW
ThinkPad X13 Gen 4 (21J3, 21J4) Laptop - 21J3S0CP00
ThinkPad X13 Gen 4 (21J3, 21J4) Laptop - 21J4S4CH00
ThinkPad X13 Gen 4 (21J3, 21J4) Laptop - 21J4S4CK00