If you wish to change the COM port number being used by your unit, you can follow the below steps:
- Open up the ‘Control Panel’ on your PC.
- Click on ‘Hardware and sound’ and then click to open up the Device manager.
- Double click on ‘Ports (COM & LPT)'.
- Open the Port settings and click ‘Advanced’.
- In the COM port number box, click the drop down menu and select the COM port number you wish to use.