The HP M0H91A Printhead is compatible with multiple printers, including the HP OfficeJet 8210, HP Officejet Pro 7700 Series, HP Officejet Pro 7720, HP Officejet Pro 7730, HP Officejet Pro 7740 WF, and many more1. It is also used for the HP OfficeJet Pro 7720, 7730, and 7740 Large Format Printers