The Lexmark 56F0Z0E Corporate Imaging Unit is a genuine/original black toner cartridge designed specifically for Lexmark printers. It uses laser print technology to ensure high-quality, professional documents and images. This corporate imaging unit is compatible with Lexmark models 320, 420, 520, and 620, providing users with reliable and consistent results for their printing needs. Lexmark's reputation for quality and innovation ensures that this toner cartridge will deliver excellent performance and crisp, clear black prints.