These printers use the TN890 cartridge:

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