HP 641A (C9721A) Cyan Original Toner Cartridge for HP Color LaserJet 4600 4650 HP 641A (C9720A) toner cartridges work with: HP Color LaserJet 4600, 4650. Original HP toner cartridges produce an average of 71% more usable pages than non-HP cartridges. Original HP Cartridge Yield (approx): ~8,000 pages 641A toner is designed to work with your HP printer for high quality, reliable results every print. What's in the Box: New Original HP 641A (C9720A) toner cartridge Color: Cyan