Compatible for HP Color Laser jet Pro MFP M277dw , M252dw , M277n , MFP M277c6 , M252dn , M252n , MFP M274n Series Printers. 4 Pack CF400X Black Toner Cartridge Up to 2,800 pages per CF400X black toner cartridge (based on 5% coverage of Letter size Paper). This item is a great choice for your printer. It is equipped with intelligent chips that can be quickly recognized by the printer and accurately display the amount of toner. Fine toner powder can provide realistic colors, output clear and eye-catching text and graphics, making your presentations and printouts stand out. GRENCYCLE toner cartridges have been sold worldwide for over 12 years, with consistent quality and stable compatibility, compatible for HP printers, and printing results as good as OEM. We use multi-layer shock-absorbing packaging and sturdy outer boxes.