Connect the printer to the PC via USB or network cable and turn it on.

Install the 32-bit driver even on a 64-bit OS. Use the command: rundll32 printui.dll,PrintUIEntry /ia /m "Zonerich ZM-421" /f "C:\Drivers\zonerich_x86.inf"

1. Finding and Downloading the Correct Zonerich Printer Driver

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