• Printer Toner Cartridge for HP Color LaserJet Enterprise CM4540 CM4540FMFP; HP Color LaserJet Enterprise CM4540 CM4540FSK; HP Color LaserJet Enterprise CM4540 CM4540FSKM; HP Color LaserJet Enterprise CM4540 CM4540FSKMMFP; HP Color LaserJet Enterprise CM4540 CM4540; HP Color LaserJet Enterprise CM4540 CM4540MFP • Compatible Part Numbers: HP 646X|HP CE264X • Quality Toner: All our compatible toner cartridges are made in ISO 9001 and ISO 14001 certified facilities. We provide a 12 month warranty and 100% satisfaction guarantee and free replacement of defective toner cartridges. • Guaranteed Compatiblity: Premium Power Products compatible toner cartridges are manufactured to perfectly fit your printer and provide the highest page yields. • Economical: Premium Power Products toner cartridges offer significant savings over buying OEM toner. • Color: Black • Condition: New - 100% OEM Compatible