If a printer is an epson, the troubleshooting process is a bit different in some areas.

*If printer is connected via USB , it will have to be assigned a virtual COM port. There is a zip file attached in this article with the program to get this virtual COM assigned.
- Assign the USB serial device to a COM that is not already taken (usually anywhere between 4-7)
- Ensure the USB serial device now shows a port and com number and correct port assigned
- Go back into hardware device settings and ensure printer setup device type is Serial and port is whichever you set virtually.
- Hit OK to save changes in hardware device settings and relaunch the onePOS software on the terminal this printer is attached to , you should then see printer active