HP 950 & 951 ink cartridges work with: HP Officejet Pro 8610, 8620, 276dw Multifunction; HP Officejet Pro 8100 - N811a/N811d; HP Officejet Pro 8630; HP Officejet Pro 251dw Savings up to 5% with HP 4-packs. HP 950/951 ink cartridge yield (approx.) per cartridge: 1,000 pages black, 700 pages cyan, 700 pages magenta, 700 pages yellow