Lenovo SYSTEM BOARDS 5B21J16006 is compatible in the following Models:

Lenovo ThinkPad P Series laptops

ThinkPad P16s Gen 1 (21CK, 21CL) Laptop - 21CK001AUS
ThinkPad P16s Gen 1 (21CK, 21CL) Laptop - 21CK001PUS
ThinkPad P16s Gen 1 (21CK, 21CL) Laptop - 21CK0052IW
ThinkPad P16s Gen 1 (21CK, 21CL) Laptop - 21CKCTO1WW
ThinkPad P16s Gen 1 (21CK, 21CL) Laptop - 21CKCTO1WWAU2
ThinkPad P14s Gen 3 (21J5, 21J6) Laptop - 21J5CTO1WW
ThinkPad P14s Gen 3 (21J5, 21J6) Laptop - 21J5CTO1WWAU2
ThinkPad P14s Gen 3 (21J5, 21J6) Laptop - 21J6S0AC00

Lenovo ThinkPad T Series laptops

ThinkPad T14 Gen 3 (21CF, 21CG) Laptop - 21CF003YUS
ThinkPad T14 Gen 3 (21CF, 21CG) Laptop - 21CF004PGE
ThinkPad T14 Gen 3 (21CF, 21CG) Laptop - 21CFCTO1WW
ThinkPad T14 Gen 3 (21CF, 21CG) Laptop - 21CGS0C504
ThinkPad T14 Gen 3 (21CF, 21CG) Laptop - 21CGS33800
ThinkPad T16 Gen 1 (21CH, 21CJ) Laptop - 21CHCTO1WW
ThinkPad T16 Gen 1 (21CH, 21CJ) Laptop - 21CHCTO1WWAU2
ThinkPad T16 Gen 1 (21CH, 21CJ) Laptop - 21CJS0TU03