HP 646X (CE264X) Black High Yield Original Toner Cartridge HP 646X (CE264X) toner cartridges work with: HP Color LaserJet Enterprise CM4540. Save up to 25% with high-yield HP toner. Cartridge yield (approx.): 17,000 pages Original HP toner cartridges produce an average of 71% more usable pages than non-HP cartridges. What's in the box: New Original HP 646X (CE264X) toner cartridge Color: Black