Lexmark 56F0XA0 is a black extra high yield toner cartridge for monochrome laser printing. It supplies toner for compatible Lexmark printers and is suited to print jobs where a larger page yield is useful.
Lexmark rates the cartridge for up to 20,000 standard pages in one-sided printing, using the ISO/IEC 19752 yield method. The listed compatible devices are the MS421dn and MX421ade. Lexmark identifies it as a regular cartridge and includes it in the Cartridge Collection Program.