Latest Chip & High Page Yield: Up to 650 pages per COLORETTO 901XL black ink cartridge (22 ml) and 450 pages per color ink (20 ml) for HP ink 901 XL (based on 5% coverage of A4 paper); The smart chip technology allows real-time ink level reading Compatible Printers: Officejet Series: 4500 G510a 4500 G510g 4500 G510n J4500 J4524 J4540 J4550 J4580 J4624 J4640 J4660 J4680 J4680c J4500 J4600 All-in-One Printer series 4500 Wireless All in-One Printer series Excellent Printing Effect: This product utilizes premium ink to deliver bright, clear, and smooth prints, ensuring your documents and photos showcase vibrant colors and intricate details Easy Installation & Reliable Durability: Quick and simple setup. Each ink cartridge is rigorously tested for performance and stability, minimizing issues like clogging and recognition errors. Enjoy hassle-free printing with confidence Trusted COLORETTO: Our remanufactured ink cartridges are well packed to avoid damage during transit. The 12-month after-sales service will bring you peace of mind Outstanding reliability,easy to install and use,rival the original in clear and stable printing. Installation Guide: 1.Take out cartridge and remove plastic protective cap if there's one. 2.Tear off the protective tape by pulling the tab. 3.Be careful not to touch the chip or the ink nozzle. 4.Insert cartridge into the corresponding cabin,push firmly until it locks in place. Notes: Please confirm your Printer Model before placing order. Any errors like "Non-Original Cartridge","Used","Low Ink" or "Empty",Please use a wipe (include in package) to wipe copper contact (CHIP),or reinstall them several times.