Lexmark Compatible Replacement Toner 78C10KO 78C10C0 78C10MO 78C10Y0 for CS421 CS421dn CS521 521dn CS622 CS622de CX421 CX421adn CX522 522ade CX622 CX622ade CX625 CX625ade CX625adhe — Black (High Yield 2000 pages)

Compatibility: Works with CS421, CS421dn, CS521, 521dn, CS622, CS622de, CX421, CX421adn, CX522, 522ade, CX622, CX622ade, CX625, CX625ade and CX625adhe printers. Yield: This CS421 black toner cartridge produces approximately 2000 pages at standard 5% coverage. The color counterparts deliver about 1400 pages at the same coverage level.

Performance: Engineered for consistent, high-volume output, these cartridges deliver crisp text and sharp graphics while maintaining fast print speeds and long-lasting stability — suitable for offices, schools, and home users who need dependable results.

Installation & Reliability: Cartridges are designed for easy, tool-free installation and have been thoroughly tested for full compatibility with the listed models to ensure reliable print quality every time. Print Quality: Formulated with pure color and high-definition toner for a glossy finish and vibrant output, providing professional-looking documents and images with each page.