Certificate Of Authenticity Label; Features - Lenovo ThinkPad T420si 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 "Replacing the PCI Express Mini Card for wireless LAN/WiMAX
connection" on page 110 or "Replacing the PCI Express Mini Card for Wireless WAN " on page 119.

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 of your computer is shown as below:

Features

Processor
• See the system properties of your computer. You can do this as follows: Click Start, right-click Computer
(in Windows XP, My Computer); then from the pull down menu select Properties.
Memory
• Double data rate 3 (DDR3) synchronous dynamic random access memory
Storage device
• 2.5-inch (7 mm height) solid state drive or 2.5-inch (7 mm height or 9.5 mm height) hard disk drive
15
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Chapter 1 Product overview