The Zebra GX420d monochrome desktop direct thermal label printer comes equipped with parallel, serial, and USB ports, prints 6″ per second in black at 203 dpi, and can be used to print labels, tags, receipts, or other media up to 4.09″ wide. Direct thermal printers use heat instead of ink and are typically smaller, quieter, faster, and more energy-efficient than dot-matrix printers. The GX420d has a maximum print speed of 6″ per second at 203 dpi (dots per inch) and prints labels up to 39” long. The 32-bit processor combined with the 8 MB of SDRAM memory and 4 MB of flash memory offers fast first label printing with extensive media graphics. Parallel, serial, and USB ports allow connectivity to a computer or other devices. EPL and ZPL programming languages are standard.