Lenovo Part
04W6947
is compatible in the following Models:
Lenovo ThinkPad X Series laptops
ThinkPad X1 Carbon 1st Gen (34xx) Laptop - 344422U
ThinkPad X1 Carbon 1st Gen (34xx) Laptop - 344423U
ThinkPad X1 Carbon 1st Gen (34xx) Laptop - 34483EM
ThinkPad X1 Carbon 1st Gen (34xx) Laptop - 34483FM