Manufacturer Part No.: HP 950XL 951XL. Colour: High Capacity Black, Cyan, Magenta Yellow. HP OfficeJet Pro 251DW. HP OfficeJet Pro 276DW. HP OfficeJet Pro 8100 ePrinter - CM752A. HP OfficeJet Pro 8600 e-All-in-One Printer - CM749A.