These printers use the MLT-D203E cartridge:
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