These printers use the MLT-D203E cartridge:
Click On a Printer to View it's Cartridges
          Samsung ProXpress M-3820 DW
          Samsung ProXpress M-3820 FW
          Samsung ProXpress M-3870 FW
          Samsung ProXpress M-4020 ND
          Samsung ProXpress M-4024 ND
          Samsung ProXpress M-4070 FX
          Samsung ProXpress M-4070 FR
          Samsung SL M-3820 DW
          Samsung SL M-3820 ND
          Samsung SL M-3870 FD
          Samsung SL M-3870 FW
          Samsung SL M-4020 ND
          Samsung SL M-4070 FR