Zebra GK420D User Guide Greg Bianchi Jun 06, 2023 118 https://docs.zebra.com/content/tcm/us/en/printers/desktop/gk420d-desktop-printer-user-guide/c-gk420d-user-guide.html https://www.zebra.com/us/en/support-downloads/printers/desktop/gk420d.html