Zebra GC420t Serial Parallel USB Thermal Label Printer | eBay
Amazon.com : Zebra GC420t Thermal Transfer Desktop Printer Print Width of 4 in USB Serial and Parallel Port Connectivity GC420-100510-000 : Label Makers : Office Products
Zebra® GC420T™ Thermal Transfer Labelprinter
Zebra GC420T Parallel Model Thermal Transfer Label Printer | DN Printer Solutions, LLC