ProPrint Compatible Toner Cartridge Replacement for HP CF400X ( Black , 1-Pack ) LIFE TIME WARRANTY - 100% Quality Guarantee for the life of the cartridge. Best Warranty in the Industry ProPrint Cartridges are High Quality OEM Replacement Cartridges That Provide Up to 60% Savings Compared to the OEM Page Yield: 2,300 Pages Black based on 5% Coverage (letter/A4) All ProPrint Cartridges are Manufacture According to ISO 9001 and ISO 14001 Standards to ensure Quality and Performance Compatible with HP Color LaserJet Pro MFP M277dw, M277n, M252dw