Lexmark Unison 62D1X0E 621X Extra High-Yield black laser toner cartridge for Lexmark MX812 model printers has black color toner to offer vibrant and high-quality color prints. Has an innovative color formulation to deliver crisp text and visually stunning graphics. It is easy to install in printer thus reducing downtime and enhancing printing time. Improves the efficiency of printing machine to deliver consistent product yield. Prevents reprints while using with printer to minimize wastage of paper, toner and energy. Useful for creating colorful documents, photos, charts and other content on a paper.