Lenovo SYSTEM BOARDS 5B20F77219 is compatible in the following Models:

Lenovo G Series laptops

G50-45 Laptop (Lenovo) - 80E300AGAU
G50-45 Laptop (Lenovo) - 80E30158AU
G50-45 Laptop (Lenovo) - 80E301S3AU
G50-45 Laptop (Lenovo) - 80E3023GAU