Certificate Of Authenticity Label - Lenovo ThinkPad T420 User Manual

If no integrated wireless PCI Express Mini Card has been preinstalled in your computer, you can install
one. To do this, follow the procedure in "Installing and replacing a PCI Express Mini Card for wireless
LAN/WiMAX connection" on page 130 or "Installing and replacing the PCI Express Mini Card for wireless
WAN" on page 137.

Certificate of Authenticity label

The Certificate of Authenticity label for the preinstalled operating system is attached. Printed on this label are
the product ID and the product key information for your computer. Record this information and keep it in a
safe place. You might need these numbers to start your computer or reinstall the operating system.
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Chapter 1 Product Overview