Lenovo SYSTEM BOARDS
63Y1912
is compatible in the following Models:
Lenovo ThinkPad T Series laptops
ThinkPad T420s - 4170CTO
ThinkPad T420s - 4173CTO
ThinkPad T420s - 4173DJ7
ThinkPad T420s - 4173DK4
ThinkPad T420s - 4173RU5
ThinkPad T420s - 4174AC3