Sony VAIO VGN-NS - Manual (Page 71)

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Using Peripheral Devices
Selecting Display Modes
You can select which display to use as the primary monitor when an external display (desktop monitor, etc.) is connected to
your computer.
The procedure for selecting a display depends on the video controller used in the computer. See the online specifications for
detailed information on the video controller.
If you want to work on your computer screen and the external display at the same time, see Using the Multiple Monitors
Function
(page 73) for more information.