OPOS Device Manager does not recognize GK printer’s USB interface

Article ID: 17799290



Topic or Information

OPOS Driver fails to identify a G-Series USB connected printer

Applies To

GK -Series Printers using OPOS Driver


 This problem seems to occur with the ZPOSPrinters.xml file.  The ZPOSPrinter.xml file shows the following:

       <Printer Name="GK420d" Lang="ZPL" PID="0092" >
            <Printer Name="GK420t" Lang="ZPL" PID="008f" >
The GK420d USB PID should be 0080 and the GK420t USB PID should be 0081.


       <Printer Name="GK420d" Lang="ZPL" PID="0080" >
            <Printer Name="GK420t" Lang="ZPL" PID="0081" >
Change the PIDs in the ZPOSPrinters.xml file and the OPOS Device Manager will discover the GK420 series printer.
Please note: The ZPOSPrinter.xml is located in the C:/Program files/Zebra Technologies/ZebraOPOS directory. 
See following link for a revised version of the ZPOSPrinter.xml file with the PID change for the GK420 printer. Read More>>


+ Product Codes

  • G-Series GK Desktop Printers
  • GK420 Healthcare Desktop Printers
  • GK420d Desktop Printer
  • GK420d Healthcare Desktop Printer
  • GK420t Desktop Printer
  • GK420t Healthcare Desktop Printer