Compatible Replacements Included: 3 Pack HP CF281X / HP 81X Toner Cartridge Compatible Printers: HP LaserJet Enterprise MFP M630h, HP LaserJet Enterprise MFP M630f, HP LaserJet Enterprise Flow MFP M630z, HP LaserJet Enterprise Flow MFP M630dn Print the same number of pages as the original 81x compatible toner cartridge Black Page Yield*: 25,000 Average cartridge Page Yield* in accordance with ISO-19752. *at 5% coverage (ISO/IEC standard) This is the higher yield version of HP 81A Toner / HP CF281A compatible toner cartridge / HP Toner Black Please contact us first with any product issues. We want all of our customers to be happy because happiness matters.