These printers use the TN890 cartridge:
Click On a Printer to View it's Cartridges
          Brother HL L-6400-DW
          Brother HL-L 6400-DWT
          Brother HL L-6400 DWG
          Brother HL L-6400 DWX
          Brother MFC L-6900-DW
          Brother MFC L-6900 DWG
          Brother MFC L-6900 DWX
          Brother MFC L-6950 DW