Page Yield*: 2,100 pages Compatible with HP 78 (Black) (per cartridge) *at 5% coverage (ISO/IEC standard) This Packages Includes the following Compatible Cartridges: 1 x 78 Black Standard Yield Compatible with: M501dn, M506dh, M506dn, M506n, M506x, M527c, M527dn, M527f, M527z Tested to ensure long-lasting use and bold, vivid print on every page. Equipped with a working smart chip for easy ink level monitoring