Compatible with: HP LaserJet: 2420, 2420d, 2420dn, 2420n, 2430, 2430dtn, 2430n, 2430tn Professionally manufactured by LD Products Page Yield* Per Cartridge: 6,000* For best results, store in a cool, dry place. Use within 3 years of purchase for optimal performance. *Average cartridge Page Yield* in accordance with ISO IEC 24711. *at 5% coverage (ISO/IEC standard) All LD compatible and remanufactured cartridges are quality tested to ensure long-lasting use and bold, vivid print on every page