Lenovo ThinkPad Edge E531 - Manual (Page 29)

If you need to remove the wireless LAN card for repair or replacement, follow the procedure in “Replacing a
wireless LAN card” on page 89.
If you have purchased a wireless WAN enabled computer, the wireless WAN card is preinstalled at the
factory. If you need to remove this card for repair or replacement, follow the procedure in “Replacing a
wireless WAN card” on page 92.
Note: Only Lenovo authorized wireless LAN or wireless WAN cards are allowed to be used in your computer.
If you install an unauthorized card that is not approved for use in your computer, the computer will not start,
but will only display an error message and emit audible beeps.
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.
The Certificate of Authenticity label applies only to computers preinstalled with the Windows 7 operating
system.
The Certificate of Authenticity label of your computer is shown as below:
Features
This topic lists the features of your computer.
Chapter 1 . Product overview 13