Toshiba Qosmio G20 (PQG21) - Manual (Page 39)

User’s Manual 2-1
Chapter 2
The Grand Tour
This chapter identifies the various components of your computer. Become
familiar with each component before you operate the computer.
Certain notebook chassis are designed to accommodate all possible
configurations for an entire product series. Therefore, please be aware that
your selected model may not have all the features and specifications
corresponding to all of the icons or switches shown on the notebook
chassis.