[With Newest Version Chips] Supricolor 5 Pack Replacement for 970 971 970xl 971xl (1Set + 1BK) for Officejet Pro X476dw X576dw X476dn X451dn X451dw X551dw Printers With Newest Version Chips: The hp 970xl ink cartridges work for printers in market so far. Firmware compatible with: 1640BR (Latest firmware) & LZP1CN1548AR & LWP1CN1502BR and other old versions. Advantages: Advanced IMPROVED formula matching with brand ink well, preventing clogging & corrosion to printhead. And Sharp & Vivid Printing, High Page Yield. Package Includes: 2x 970 XL Black + 1x 971 XL Cyan + 1x 971XL Magenta + 1x 971XL Yellow Ink Cartridges Compatible with: HP X476dw hp X576dw hp X476dn hp X451dn hp X451dw hp X551dw Printer. Worry-Free Warranty: Supricolor 5 Pack ink cartridges Replacement for HP 970 have 2 Years Warranty