These printers use the C950X71G cartridge:
Click On a Printer to View it's Cartridges
          Lexmark C 950 DE
          Lexmark X 950
          Lexmark X 950 DE
          Lexmark X 952
          Lexmark X 952 DE
          Lexmark X 952 DTE
          Lexmark X 954
          Lexmark X 954 DE
          Lexmark X 954 DHE
          Lexmark X 9540 DE