S SMARTOMNI Compatible Toner Cartridge Replacement for HP CF400A CF400X CF401X CF402X CF403X (KCMY 4 Pack), Compatible use with HP Color Laserjet Pro M252n M252dw, MFP M277dw M277n Series Compatible with: HP Color LaserJet Pro M252n M252dw, MFP M277dw M277n Series Printers Standard Page Yield: 1 Pack CF400X Black Toner- 2800 Pages and 1 Pack Color- 2300 Pages at 5% coverage of Letter/A4 Contains: 4 Pack ( 1 Black , 1 Cyan , 1 Magenta , 1 Yellow ) of CF400X Compatible Toner Cartridge Replacement Warranty: 2-Year 100% Quality Satisfaction Product Guarantee Contact us if you need support. S SMARTOMNI Professional Service team will solve it for you.