Page Yield*: 4,000* per cartridge For best results, store in a cool, dry place. Use within 3 years of purchase for optimal performance. per cartridge *Average cartridge Page Yield* in accordance with ISO IEC 24711. *at 5% coverage (ISO/IEC standard) Color: Black Compatible with: Samsung ProXpress M3015DW & M3065FW Please contact us first with any product issues. We want all of our customers to be happy because happiness matters.