About this documentation
• Illustrations in this documentation might look different from your product.
• Depending on the model, some optional accessories, features, and software programs might not be
available on your computer.
• Depending on the version of operating systems, some user interface instructions might not be applicable
to your computer.
• Documentation content is subject to change without notice. Lenovo makes constant improvements on the
documentation of your computer, including this User Guide. To get the latest documentation, go to
https://
support.lenovo.com
.
• Microsoft
®
makes periodic feature changes to the Windows
®
operating system through Windows Update.
As a result, some information in this documentation might become outdated. Refer to Microsoft resources
for the latest information.
• This documentation applies to the following product models:
Model Name Machine Type
Lenovo Yoga C640-13IML 81UE
Lenovo
Yoga C640-13IML LTE
81XL
© Copyright Lenovo 2019 iii
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