Lexmark CS421 Black Toner Replacement — 78C10KO / 78C10C0 / 78C10MO / 78C10Y0 — Compatible with CS421 CS421dn CS521 521dn CS622 CS622de CX421 CX421adn CX522 522ade CX622 CX622ade CX625 CX625ade CX625adhe

Compatibility: This CS421 black toner is made for use in Lexmark models CS421, CS421dn, CS521, 521dn, CS622, CS622de, CX421, CX421adn, CX522, 522ade, CX622, CX622ade, CX625, CX625ade and CX625adhe. Yield: High-capacity black prints up to 2000 pages at 5% coverage. The corresponding color cartridge yields 1400 pages at equivalent coverage. Performance: Formulated for clear output, rapid print speeds and longer-lasting results, these cartridges suit busy offices, schools and individual users with heavy print needs. Installation & Reliability: Cartridges are built for straightforward, quick installation and undergo compatibility testing to ensure dependable, consistent print quality in every use. Print Quality: Using pure, high-definition toner, the cartridge delivers a high-gloss finish and sharp reproduction of graphics and text for professional-looking documents.