Lenovo 20JW, User Manual, Page: 25 / 176

Note: For the user-installable wireless module, ensure that you use only a Lenovo-authorized wireless
module for the computer. Otherwise, an error message will be displayed and the computer will beep
when you turn on the computer.
Labels for the Windows operating systems
Windows 7 Certificate of Authenticity: Computer models preinstalled with the Windows 7 operating
system have a Certificate of Authenticity label affixed to the computer cover or inside the battery
compartment. The Certificate of Authenticity is your indication that the computer is licensed for a Windows 7
product and is preinstalled with a Windows 7 genuine version. In some cases, an earlier Windows version
might be preinstalled under the terms of the Windows 7 Professional license downgrade rights. Printed on
the Certificate of Authenticity is the Windows 7 version for which the computer is licensed and the Product
ID. The Product ID is important when you reinstall the Windows 7 operating system from a source other
than a Lenovo product recovery disc set.
Windows 10 Genuine Microsoft
®
label: Your computer might have a Genuine Microsoft label affixed to its
cover depending on the following factors:
• Your geographic location
• Date when your computer was manufactured
• Version of Windows 10 that is preinstalled
Go to https://www.microsoft.com/en-us/howtotell/Hardware.aspx for illustrations of the various types
of Genuine Microsoft labels.
• In the People’s Republic of China, the Genuine Microsoft label is required on all computer models
preinstalled with any version of Windows 10.
• In other countries and regions, the Genuine Microsoft label is required only on computer models licensed
for Windows 10 Pro.
Chapter 1
.
Product overview
9