USB to Serial Converter Adapter cable for use with the Zebra ZQ500 Series Vehicle Cradle or Battery Eliminator Cradle where connection to a serial device is required. (Allows backwards compatibility for customers migrating from RW vehicle cradles with serial port). COMPATIBLE ZEBRA PRINTERS: ZQ510, ZQ511, ZQ520, ZQ521.
Detailed Specs
Zebra Mobile Printer Accessory Guide.pdf
https://www.thermalprintersupplies.com/content/product_downloads/zebra/Zebra Mobile Printer Accessory Guide.pdf