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Enabling/Disabling Secondary Displays (optional)
1Access the Windows® Control Panel. Double- click Display.
2Click on the Settings tab and then the Advanced... button.
3Click on the ATI Displays tab.
4Click the enable/disable button 
for the display device you want to enable/disable.
5Click OK or Apply to save the changes.
Enabling Extended Desktop Mode (optional)
1Access the Windows® Control Panel. Double- click Display.
2Click on the Settings tab.
3Click the monitor icon for the display onto which you want to extend your desktop.
4Click Yes to enable the selected display.
5Checkmark the Extend my Windows desktop onto this monitor check box (Windows® may automatically place it there).
6Click OK or Apply to save the changes.
Dynamic Display Reassignment (optional)
You can change the assignment of your Primary and Secondary display on the fly, without rebooting. However, before you can change the assignment of the Primary display, at least one Secondary display must be enabled, and Extended Desktop mode must be enabled.
To enable a Secondary display, refer to the section Enabling/Disabling Secondary Displays (optional).