Compatible with: HP Color LaserJet Pro MFP M277dw, LaserJet Pro M252dw, LaserJet Pro MFP M277n Page Yield*: Black: 2,800 Colors: 2,300. *at 5% coverage (ISO/IEC standard) For best results, store in a cool, dry place. Use within 3 years of purchase for optimal performance. Color: HY Black, HY Cyan, HY Yellow,& HY Magenta Please contact us first with any product issues. We want all of our customers to be happy because happiness matters.