Application: Connect NUCOUN's VC-3/VC-7/NC-5/VS-75 money counter via RS232 interface, please check the detailed image on product page Compatibility: Compatible with ESC/POS print instruction set. Supported drivers include WIN2003/WINXP/WIN7/WIN8/WIN10/LINUX/Mac. Support USB port, serial port (RS-232), Ethernet port and cash drawer interface Printing function: Support double-width and double-height printing of ANK characters, custom characters and Chinese characters; dot matrix graphics that adjust the spacing of printing characters; support dot maps with different densities and download graphics printing Printing speed: thermal line printer, printing speed is 250mm/s, printing paper width is 79.5±0.5mm Printer self-test function: Self-test can detect whether the printer is working normally. We have a professional maintenance team, if you have any questions, we are ready to help NUCOUN Receipt Printer VCP-80 80mm Thermal Receipt Printer, Serial USB Network Cash Box Interface