Dell Precision M90 - Manual (Page 43)

The touch pad has silk screening on the right side and the bottom to indicate scrolling abilities. Scrolling is enabled by default. To disable this feature, modify
the mouse properties within the Control Panel.
Customizing the Touch Pad
You can use the Mouse Properties window to disable the touch pad and track stick or adjust their settings.
1. You can use the Mouse Properties window to disable the touch pad or adjust their settings. Open the Control Panel, click Printers and Other
Hardware, and then click Mouse. For information about the Control Panel, see the Windows Help and Support Center. To access the Help and Support
Center, see
Windows Help and Support Center .
2. In the Mouse Properties window, click the Touch Pad tab to adjust touch pad settings.
3. Click OK to save the settings and close the window.
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NOTE: The scroll zones may not work with all applications. For the scroll zones to function properly, the application being used must support the touch
pad scroll feature.