With New Chip:These CF289Y 89Y toner cartridge 1 pack(Black)are alread installed with new chips,No need to transfer orginal CF289Y 89Y toner chip to them
Compatible Printers:Replacement for Enterprise Flow MFP M528c M528z M507dn M507dng M507n M507x M528dn M528f Series
Model confirmation:check the printer model before purchase
Installation:Before installation, you can shake the toner cartridge up and down or left and right to make the toner cartridge flow well and the product particles uniform