Without Chips: CF289X 2 Compatible High Yield Toner Cartridges Simple Process to Switch the Chip from the Depleted Cartridge. Instructions and a screwdriver Included. Make Sure That The Chip is inserted into the Correct Direction. Page Yield: Around 10, 000 Pages per Cartridge @ 5% Standard Coverage Rate on A4 Paper Size. For HP LaserJet Enterprise M507x M507n M507dn and MFP M528dn M528f / Follow MFP M528c & M528z Best Performance & Printing Quality. Manufactured with the highest quality and standards by ISO, CE, & REACH manufacturer matching the standards of OEM. PRINTOXE® Brand 100% Compatible in Retail Package Shown in Image. Shelf Life exceeds 24 Months.