G-Cube G7T-60S - Manual (Page 13)

4. See the contrast after drawing the line.
Excel:
Original After Drawing Line, the column has been enlarged
Windows Picture and Fax Viewer:
Original After Drawing Line, the picture has been enlarged
Troubleshooting
If your mouse doesn’t work properly, follow the steps below :
1. Check battery and battery installation.
2. Unplug and re-plug the receiver
3. Test the device on another USB port or computer.
4. Some surface may “trick” the optical sensor, such as reflective surface like glass. The optical sensor should perform well on all
other surface.