For the best print quality,choose toner cartridges designed specifically for Hewlett-Packards LaserJet printers. When you use a genuine HP LaserJet toner cartridge, you get the sharpest, cleanest output possible on a wide variety of papers and film.
HP C4191A-KIT-10 Product Features
Page Yield: 9,000 Pages @ 5% Coverage
Compatibility: HP Color LaserJet 4500, Color LaserJet 4550, Color LaserJet 4550N, Color LaserJet 455 and Color LaserJet 4550HDN
HP Black Toner Cartridge for 4500 and 4550 Series, 10 Pack Video