970XL / 971XL Compatible Ink Cartridge Replacements (Pack of 4) for HP X451dn X451dw X476dn X476dw X551dw X576dw (CN625AM CN626AM CN627AM CN628AM) by Dram Tree Inks (TM) Contents: (1) 970XLBK - Black, (1) 971XLC - Cyan, (1) 971XLM - Magenta, (1) 971XLY - Yellow ISO9001 and ISO14001 certified, thoroughly tested for quality and compatibility Replaces HP models CN625AM, CN626AM, CN627AM, CN628AM Compatible With: X451dn, X451dw, X476dn, X476dw, X551dw, X576dw