For the best print quality,choose toner cartridges designed specifically for HP 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 Product Features
Page Yield: Approximately 9,000 Pages @ 5% Coverage
Compatibility: Color LaserJet 4500, 4550, 4550N, 4550DN and 4550HDN
HP Black Toner Cartridge for 4500 and 4550 Series Specifications
Part # C4191A
Up to 9000 pages at 5% coverage
HP Black Toner Cartridge for 4500 and 4550 Series Video