Lenovo ThinkPad 770E-ED TP 770X User's Reference that shipped with the system - Page 83
Disabling the TrackPoint, TrackPoint, Auto-Disable
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Attaching External Mouse, Keypad, and Keyboard Disabling the TrackPoint The TrackPoint is designed to work simultaneously with another pointing device (such as a mouse) attached to the system. But some mouse types require the TrackPoint to be disabled before you can use them, such as: A mouse that is not fully compatible with the PS/2 mouse connected to the external-input-device connector A mouse connected to the serial connector A mouse connected to the USB connector To disable the TrackPoint: 1 Start the ThinkPad Configuration program. See "ThinkPad Configuration Program" on page 26. 2 Click on the TrackPoint ( ) button. 3 Click on Auto-Disable for the TrackPoint. $ This setting automatically disables the TrackPoint if a mouse is $ connected to the external-input-device connector when the $ computer starts. If no external mouse is connected, however, $ the TrackPoint is enabled. Therefore, to reenable the $ TrackPoint if it has been disabled, restart the computer after $ disconnecting a mouse. If you use a mouse connected to the serial connector or the USB connector, you need to select Disable, instead of Auto-Disable. Chapter 2. Extending the Features of Your Computer 69