The M118 is a PostScript printer, which is an older (but fully functional!) protocol that allows Windows to print the correct fonts and typesetting.
In order to use this device as a printer, you will need to have the PostScript module installed in the printer, and then install the printer drivers.
Drivers can be found
at this link, and support documentation
at this link. The two particular support documents you'll want to review are the User Guide and the PostScript User Guide.
Hope this is helpful!
Lost driver disk and paper tray
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