Starink 4 Pack Ink Cartridge Replacement for HP 970XL 971XL HP 970 971 (CN625AM CN626AM CN627AM CN628AM) for HP Officejet Pro X476dw X476dn X451dn X551dw Printers IMPORTANT NOTE: OLD chips DO NOT compatible with Firmware: LZP1CN1548AR or LWP1CN1548AR(Latest version). High Yield, High Value. Big saving.NON-OEM. Replacement HP 970xl 971xl ink cartridge: 1 Black Cn625am, 1 Cyan Cn626am, 1 Magenta Cn627am, 1 Yellow Cn628am. Compatible with: HP officejet pro X451dn, HP officejet pro X451dw, HP officejet pro X476dw, HP officejet pro X476dn, HP officejet pro X551dw Wireless All-in-One Color Printers. High Page Yield: Black: up to 9,200 Pages at 5% coverage; Cyan/Magenta/Yellow: up to 6600 Pages at 5% coverage.