Zebra GK420t Thermal Barcode Label Printer › Zebra GK420t, Standard Features Include Thermal Transfer, 4″ Print Width, 203 dpi, Tear Bar, RS-232 Auto-Sensing Serial, USB 1.1, Centronics Parallel, 4 MB Standard Flash, 8MB Standard Sdram, EPL, ZPL II, USB Cable, North America Power Cord Specs: 4.09″ Print width-5 in/s Mono-203 dpi – USB – Serial – Parallel