VMS Help SHOW, PRINTER, Qualifier  *Conan The Librarian (sorry for the slow response - running on an old VAX)

1 - /OUTPUT

       /OUTPUT[=filespec]
       /NOOUTPUT

    Controls where the output of the command is sent. By default,
    the output of the SHOW PRINTER command is sent to the current
    SYS$OUTPUT device (usually your terminal). To send the output
    to a file, use the /OUTPUT qualifier followed by a file
    specification.

    The asterisk (*)  and the percent sign (%) wildcard characters
    are not allowed in the file specification. If you enter a partial
    file specification (for example, specifying only a directory),
    SHOW is the default file name and .LIS is the default file type.

    If you enter the /NOOUTPUT qualifier, output is suppressed.

2 - /IDSTRING

    Returns the USB printer ID string as a text string and displays
    it on your screen. This information appears at the end of the
    typical SHOW PRINTER command display.

3 - /SERIALNUM

    Returns the USB printer serial number as a text string and
    displays to the screen. The USB printer returns the serial number
    in Unicode format, and this is converted to ASCII text before
    being displayed.