The Zebra GC420d is a high-quality label printer that uses thermal technology to print black and white labels at a maximum resolution of 203 x 203 DPI. With a fast black print speed of 4 ppm, this desktop printer offers connectivity options such as Serial, Parallel, and USB 1.0/1.1. Part of the Zebra G product line, this printer is reliable and efficient for various printing needs. Ideal for businesses that require label printing, the Zebra GC420d is a top choice for those looking for a durable and efficient printer.