Lenovo SYSTEM BOARDS
04W0000
is compatible in the following Models:
Lenovo ThinkPad X Series laptops
ThinkPad X1 Carbon 1st Gen (34xx) Laptop - 3443CTO
ThinkPad X1 Carbon 1st Gen (34xx) Laptop - 34486T7
ThinkPad X1 Carbon 1st Gen (34xx) Laptop - 3448CTO