LD Compatible Toner Cartridge Replacement for Dell 310-6640 J9833 (Black) Page Yield: 3,000 | Shelf Life: 24-36 months The use of compatible cartridges and supplies does not void your printers warranty The use of LD branded laser toner cartridges and supplies does not void your printers warranty. All LD branded products are backed by a 100% satisfaction and LIFETIME guarantee For use in the following Dell Laser printers: 1100, and 1110