Office World Compatible Ink Cartridge Replacement for HP 940 940XL (1 Black, 1 Yellow, 1 Magenta, 1 Cyan) 4 Packs Less expensive,same Great quality. What's in the Box: replacement for HP 940XL Ink Cartridge(1 Black, 1 Cyan, 1 Magenta, 1 Yellow) 4 Pack Compatibility: HP Officejet Pro 8000 Wireless Printer-A809n, Officejet Pro 8000 Printer -A809a, Officejet Pro 8000 Enterprise Printer-A811a, Officejet Pro 8500 All-in-One Printer-A909a, Officejet Pro 8500 Wireless All-in-One Printer-A909g, Officejet Pro 8500 Premier All-in-One Printer-A909n , Officejet Pro 8500A e-All-in-One Printer-A910a, Officejet Pro 8500A Plus e-All-in-One Printer -A910g, Officejet Pro 8500A Premium e-All-in-One Printer-A910n. Approximate page yield:~2300 pages per black, ~1500 pages per color at 5% coverage. Customer Service:Please find your order and click 'Contact Seller',send us Email.