These printers use the TN300HL cartridge:

Brother HL 820

Brother HL 1020

Brother HL 1040

Brother HL 1040 DX

Brother HL 1040 IM

Brother HL 1050

Brother HL 1050 DX

Brother HL 1050 IM

Brother HL 1060

Brother HL 1070

Brother HL P-2000

Brother Laser HL-1040

Brother Laser HL-1050

Brother Laser HL-1060

Brother MFC 2000

Brother MFC HL P-2000

Brother MFC P-2000

Brother MFC P-2000 DX