Replaces the Following Manufacturer Numbers: C6614D (HP 20). Compatible with the Following Printer Models: Apollo P2100U, Apollo P2200, Apollo P2300U, Apollo P2500, Apollo P2600, DeskJet 610, DeskJet 610C, DeskJet 610CL, DeskJet 612, DeskJet 612C, DeskJet 630, DeskJet 630C, DeskJet 632, DeskJet 632C, DeskJet 640, DeskJet 640C, DeskJet 642, DeskJet 642C, DeskJet 648, DeskJet 648C, DeskJet 656, DeskJet 656C, DeskJet 656CVR, Fax 1010, Fax 1010XI, Fax 1020, Fax 1020XI, Fax 1040, Fax 1040XI, Fax 1050.