These Lexmark 12A1970E (No.70) Black Ink Cartridges can be used with the Compaq A100, Compaq A1000, Compaq A1200, Compaq A1400, Compaq A1500, Compaq A3000, Compaq A4000, Compaq A900, Compaq C3-1000, Compaq IJ1200, Compaq IJ300, Compaq IJ700, Compaq IJ750, Compaq IJ900, Lexmark F4270, Lexmark JP3200, Lexmark JP5000, Lexmark JP5700, Lexmark JP5770, Lexmark JP7000, Lexmark JP7200, Lexmark OPTRA40, Lexmark OPTRA45, Lexmark X125, Lexmark X125 PRO, Lexmark X4250, Lexmark X63, Lexmark X70, Lexmark X73, Lexmark X80, Lexmark X83, Lexmark X84, Lexmark X85, Lexmark Z11, Lexmark Z31, Lexmark Z42 Lexmark Z43, Lexmark Z45, Lexmark Z45SE, Lexmark Z51, Lexmark Z52, Lexmark Z53, Lexmark Z54, Lexmark Z80, Lexmark Z82, Samsung MJ4500, Samsung MJ4500C, Samsung MSYS4700, Samsung MSYS4800, Samsung SCF4700, Samsung SCX1000, Samsung SF3150, Samsung SF4700, Samsung SF4750C and the Samsung Smartjet ink jet printer.