912XL Ink Cartridges Combo Pack Replacement for HP 912XL Compatible with HP Officejet Cartridges 8012 8014 8015 8022 8024 8025 AIO Printers (Black, Cyan, Magenta, Yellow, 4 Pack)Compatible Printer: Q image 912XL ink cartridges combo pack work for HP OfficeJet Series 8012 8014 8015 8017, OfficeJet Pro Series 8022 8023 8024 8025 AIO printers. Page Yield: Up to 825 pages per 912XL black and colour cartridge (at 5% coverage of A4 paper). Package content: 1 x Chip Upgrade Device,1 x 912XL Black, 1 x 912XL Cyan, 1 x 912XL Yellow, 1 x 912XL Magenta. About Unismart upgrade device: Q image 912XL cartridge is equipped with a chip