Sony VGX-XL301 User Manual page 28

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Using Your VAIO Computer
If you want to use a mouse, instead of the touch pad, as your pointing device, you can disable the touch pad on the wireless
keyboard.
To disable/enable the touch pad
To disable the touch pad, slide the POINTING DEVICE switch on the bottom of your keyboard to the OFF position. To enable
the touch pad, slide it back to the ON position.