Lenovo SYSTEM BOARDS 5B21J77435 is compatible in the following Models:

Lenovo ThinkPad T Series laptops

ThinkPad T14s Gen 3 (21CQ 21CR) Laptop - 21CQ001XAU

ThinkPad T14s Gen 3 (21CQ 21CR) Laptop - 21CQ001YAU

ThinkPad T14s Gen 3 (21CQ 21CR) Laptop - 21CQ0020AU

ThinkPad T14s Gen 3 (21CQ 21CR) Laptop - 21CQ0021AU

ThinkPad T14s Gen 3 (21CQ 21CR) Laptop - 21CQCT01WW

ThinkPad T14s Gen 3 (21CQ 21CR) Laptop - 21CQCTO1WW

Lenovo ThinkPad X Series laptops

ThinkPad X13 Gen 3 (21CM 21CN) Laptop - 21CMCTO1WW