Superb Choice Remanufactured Ink Cartridge Replacement for HP 950XL/951XL(CN045AN CN046AN CN047AN CN048AN) Combo (1 Black, 1 Cyan, 1 Magenta, 1 Yellow) Pack of (1 Black, 1 Cyan, 1 Magenta, 1 Yellow) Ink Cartridges 1 year replacement warranty,30-day refund guarantee after the purchase. Replacement for Original Model: HP 950XL/951XL(CN045AN CN046AN CN047AN CN048AN) Compatible Printer: HP Officejet Pro 251dw, 276dw, 276dw MFP, 8100, 8600 e, 8600 Plus, 8600 Premium, 8610, 8615, 8620, 8625, 8630, 8640, 8660 Not fit for the printer which produced after March, 2015. And also not fit for the printer which you have upgraded the firmware to FDP1CN1502AR.