Video Mode Options
From the menu, click the video mode you want:
•Extend
•Set as main monitor
•Notebook monitor off
•Mirror
•Off
See Video Modes for a description of each mode.
Note: Clicking Extend To allows you to select whether the extended display appears to the right of, to the left of, above, or below the primary display. This automatically puts your configuration in Extend mode. To use the Extend To option in Set as main monitor mode, click Extend To, click the option you want for the extended display, and then click Set as
main monitor.