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Trackball Mouse Function on/off
Press and hold 3 buttons below the trackball (left, middle and
right button) for 5 seconds, the trackball function will be
disabled / enabled.
Trackball DPI Adjustment
Press and hold the middle button and then click on the right button
to change the DPI speed among 600/1000(default)/1600 dpi
1. Trackball
2. Left Button
3. Middle Button
4. Right Button
Left Mouse Button "Click & Hold"
Hold down the middle button, then hold the left button.
Release the left button then release the middle button to activate
the "Click & Hold" function. Repeat to deactivate.