This is 4-Pack compatible / remanufactured HP (30X) CF230X toner cartridges. Each toner cartridge is manufactured to be comparative to the original in terms of quality and page yield. Extensive testing and R&D have enabled us to produce cartridges that will not only save you money, but also provide a high quality product to ensure long term customer satisfaction. IMPORTANT: This is a compatible cartridge that comes without a chip. You need to move the chip from your original (OEM) cartridge and place it onto this compatible cartridge. This means that the printer will show "empty" or "0" toner supply due to the used chip, but the cartridge will still be able to print for the full life cycle and you can bypass the supply message that will popup by following the simple instructions included. Print yield or print quality will not be affected. A chip transfer tool is included, as well as simple instructions, which will make it easy for you to move the chip from your original cartridge to this compatible cartridge. The chip can be re-used many times.