Original HP 122A (Q3960A Q3971A Q3972A Q3973A) toner cartridge works with: HP Color LaserJet 2550, 2800 Professional quality color every time you print. HP toner cartridges contain critical printing system components including HP chemically-grown toner. You get millions of vivid colors, sharp text and smooth gloss to make your business and ideas shine. Simple, easy to use supplies are the hallmark of HP LaserJet printing. With only 5 color printing supplies, HP makes low-maintenance color printing as easy as monochrome. HP Smart technology makes HP supplies easy to order, install and maintain