For Apple MacBooks:
Or look on the bottom of the computer casing.
For Lenovo
This label is under the battery for the L430 and on the back of the X1 Carbon (please enter outlined digits below - do not enter dashes).
Or look on the bottom of the computer casing.
This label is under the battery for the L430 and on the back of the X1 Carbon (please enter outlined digits below - do not enter dashes).