IKONG 3 Colors 951 Compatible Toner Cartridge Replacement for HP 951 XL Ink Cartridge Compatible with HP Officejet Pro 8600 8610 8620 8100 8630 8660 8640 8615 8625 (1 Cyan 1 Magenta 1 Yellow) Upgrade Firmware Support: Click "IKONG" below the price,then enter "Ask a question" on the Top right to the next page to contact us,with any damaged cartridge emails replied in less than 24 hours 7/7 Contents: HP 951XL Compatible Ink Cartridge Replacement ( 3 Color ) Page Yield(approx): 1,500 Printer Compatibility: HP OfficeJet Pro 8600, 8610, 8620, 8630, 8640, 8615, 8625, 251DW, and 271DW printers ATTN: Any errors like"damaged cartridges",an updated firmware will fix the self-induced problem.Please download the latest firmware on HP\'s official website based on your printer model,and only by updating the firmware can continue to use our cartridges.''' 951 XL High-capacity ink cartridges enjoy your $AVING$ as well as the times to replace new cartrdges.100% No Hassle and Money Back Guarantee.