Compatible with: Color LaserJet Enterprise M507dn, Color LaserJet Enterprise M507dng, LaserJet Enterprise M507n, LaserJet Enterprise M507x, LaserJet Enterprise MFP M528dn, LaserJet Enterprise MFP M528f Compatible with: LaserJet Enterprise Flow MFP M528c, LaserJet Enterprise Flow MFP M528z Compatible Replacements Included: 3 HP 89A CF289A Black Toner Cartridge / Standard Yield Print as many pages as the OEM for only a fraction of the cost! Page Yield*: 5,000 Average cartridge Page Yield* in accordance with ISO 19752. *at 5% coverage (ISO/IEC standard) Please contact us first with any product issues. We want all of our customers to be happy because happiness matters.