This brand new Zebra GX420d is a direct thermal desktop label printer with a maximum resolution of 203 x 203 DPI and a black print speed of 6 inches per second. It has 8 MB SDRAM and 4 MB flash memory and offers connectivity options such as Serial (RS-232), USB 1.0/1.1 and has the optional built-in Ethernet port to connect directly to your network .The printer belongs to the Zebra G product line and is suitable for black and white thermal label printing