Lenovo SYSTEM BOARDS
04W3256
is compatible in the following Models:
Lenovo ThinkPad T Series laptops
ThinkPad T520 - 4239CTO
ThinkPad T520 - 42404TM
ThinkPad T520 - 42405BG
ThinkPad T520 - 4242CTO
ThinkPad T520 - 4242DG5
ThinkPad T520 - 4242PY7
ThinkPad T520 - 4242R39
ThinkPad T520 - 4242WAU