Click on your Cartridge Number. This number is printed on the cartridge(s) in your printer.    original number. No. 15   (HP c6615de/ne 15) Black       No. 20   (HP c6614de/ne 20) Black     No. 21   (HP c9351a 21) Black     No. 26   (HP 51626ae/ge 26) Black     No. 27   (HP c8727ae / 27) Black     No. 29   (HP 51629ae/ge 29) Black       No. 33   (HP 51633me 33) Black       No. 45   (HP 51645ae/ge 45) Black       No. 56   (HP c6656ae / 56) Black       No. 338   (HP ) Black       No. 339   (HP c8767e / 339) Black    original number.       No. 17   (HP c6625ae 17) Colour     No. 22   (HP c1823de 22) Colour     No. 23   (HP c1823de/ge 23) Colour     No. 25   (HP 51625ae 25) Colour     No. 28   (HP c8728a / 28) Colour     No. 49   (HP 51649ae/ne 49) Colour     No. 57   (HP c6657ae / 57) Colour     No. 58   (HP c6658ae / 58) Photo     No. 78   (HP c6578ae/de 78) Colour     No. 110   (HP cb304ae 110) Colour     No. 343   (HP c8766ee 343) Colour     No. 344   (HP c9363e 344) Colour     No. 348   (HP c9369e 348) Colour

Refill kits are also available