Epson S050100 Black Toner Developer Cartridge for use with C900/C1900. Page life 4,500.Compatible Printers: Epson Aculaser C 1900 Series, Epson Aculaser C 1900, Epson Aculaser C 1900 D, Epson Aculaser C 1900 Wifi, Epson Aculaser C 1900 S, Epson Aculaser C 900 N, Epson Aculaser C 1900 PS, Epson Aculaser C 900, Epson Aculaser C 900 Series