Compatible with: the following Okidata MB and OKI B printers: MB461 MFP, MB471, MB471W, B411d, B411dn, B431d, and B431dn Page Yield*: 30,000 For best results, store in a cool, dry place. Use within 3 years of purchase for optimal performance.*at 5% coverage (ISO/IEC standard) Color: Black Please contact us first with any product issues. We want all of our customers to be happy because happiness matters.