12. How to change the printing port is available when it showed” Printing port is on
used”.
"Printer cannot be configured because printing port is on used." it may cause by PC port is abnormal.
We suggest that you can check with below steps:
Step1: Change to another PC port then reconnects to the printer and re-install the driver.
Step2: Click PC table “start"-"Devices and Printers”, delete the useless printer copy manually (the mouse
right click on the useless printer name, and then delete it).
Then reconnect to the printer and re-install the driver.
Step4: please Right click “connect” in the listed printer. It will be installed the driver directly.
Step5: After done all above steps, you will see the connected printer in the “ Devices and printers”