Page Yield*: 20,000 For best results, store in a cool, dry place. Use within 3 years of purchase for optimal performance.*at 5% coverage (ISO/IEC standard) Compatible with the following Lexmark MX printers:MX511de, MX511dhe, MX511dte, MX610de, MX611de, MX611dhe, and MX611dte Color: Black Please contact us first with any product issues. We want all of our customers to be happy because happiness matters.