Lenovo SYSTEM BOARDS
5B20W77978
is compatible in the following Models:
Lenovo ThinkPad T Series laptops
ThinkPad T490 (20N2, 20N3) Laptop - 20N2CTO1WW
ThinkPad T490 (20N2, 20N3) Laptop - 20N3S3R1U
ThinkPad T490 (20N2, 20N3) Laptop - 20N3S3WV29