Lenovo Part
04X6523
is compatible in the following Models:
Lenovo ThinkPad X Series laptops
ThinkPad X1 Carbon - 20A7CTO1WW
X1 Carbon 2nd Gen (Type 20A7, 20A8) Laptop (ThinkPad) - 20A8A0KMOO
ThinkPad X1 Carbon - 20A8CTO1WW