Brand: TG ImagingColor:BlackQuantity:2 Pack SetCompatible for: CRG-120 120 Toner Cartridge Page Yield:Up to 5,000 pages @ 5% coveragePrinter Model: ImageClass D1100 D1120 D1150 D1170 D1180 D1320 D1350 D1370 D1520 D1550; Satera MF417dw; i-Sensys MF6680DN printer Installation GuideMake sure the machine is turned onRemove the used toner cartridge from the machineGently shake the cartridge from side to side.Remove the orange protected and seal from cartridge.Put the Toner back in the machine.After replacing a toner cartridge, DO NOT turn off the machine or open the front cover until the machine's display returns to Ready Mode.If the printer screen shows "Non-genuine" or "Counterfeit Cartridges Detected", please press "OK" / "Continue"/ "Accept" button to go on print. Please do not hesitate to contact us if you have any questions, our Customer Service Team will respond in 1-2 business days