Quick Steps:-

1. Log in to the ACTAtek device WEB UI

2. Go to the Terminal Setup page and navigate to Web Server port HTTP / HTTPS. 

3. Assign a new port number for HTPP/HTTPS or both and then click on the Submit button to save the changes.

Note:- By default the ACTAtek device is using port 443 for HTTPS and port 80 for HTTP protocols. If needed you can also Assing a dedicated port number. Example 8080