56F1000 Toner Cartridge Compatible with Lexmark MS521 MS621 High Yield Replacement for Lexmark MS321 MS421 MS521 MS621 MX521 MX522 MX622 MS622.

Compatible Printers: This 56F1000 Black Toner Cartridge serves as a replacement for Lexmark MS321dn, MS421dn, MS421dw, MS521dn, MS621dn, MS622de, MX321adn, MX321adw, MX421ade, MX521ade, MX521de, MX522adhe, MX622ade, and MX622adhe laser printers. Package Contents: 1 Pack of 56F1000 Black Toner Cartridge. Page Yield: Up to 6,000 pages at 5% coverage on letter or A4 size paper. Installation: The cartridge features a built-in smart chip for quick compatibility and simple connection with printers. Before installation, you can gently shake the toner cartridge up and down or left and right to help the toner flow smoothly and ensure the product particles are evenly distributed, for a more satisfactory printing result. Model Confirmation: Please verify your printer model prior to purchase