HP CF031A Cyan original LaserJet toner cartridge features latest laser print technology and provides fast, reliable, high-quality prints. Cartridge is compatible with HP Color LaserJetCM4540, CM4540f, CM4540fskm printers. Manufactured specifically for HP printers original HP toner cartridges offer fast, hassle-free printing. HP color LaserJet toner cartridges deliver consistent, uninterrupted printing. HP 646A Cyan toner cartridges deliver consistent yields and provide high-quality results.