COM3 showing in Device Manager but not in the list of printer port

I have a Datamax Allegoro printer that uses a USB series converter. The poster converter as installed correctly (in devices and Device Manager) and received COM3.

When I go to change the player of the printer to use the COM3 port, it is not in the list. How can I get the COM port appears in the list of printer ports?

Note: this port was already there, but anyway when I was working on some of the settings (I changed the adapter to use COM1 temporarily as a test, then when I went to change it back, it was gone). I tried to uninstall the driver for the adapter and then re-install again, it did not work.

Thank you.

Use system restore to go back to an earlier date at the beginning of the problem. To run system restore, click Start-> programs-> Accessories-> System Tools-> system restore. Click on the box that says show more restore points.

Good luck.

Tags: Windows

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