Samsung genuine 100,000-page yield imaging unit is compatible with original Samsung laser toner cartridges for reliable performance. It is easy to install and convenient to replace.[2]Compatible Printers: Samsung MultiXpress X 4200 Series, Samsung MultiXpress X 4220 RX, Samsung MultiXpress X 4250 LX, Samsung MultiXpress X 4300 LX, Samsung MultiXpress 4 Renovation