These printers use the TN210BK cartridge:

Brother HL 3040 CN

Brother HL 3040 CN Color PTR

Brother HL 3045 CN

Brother HL 3070 CW

Brother HL 3070 CW Color PTR

Brother HL 3075 CW

Brother HL 8070

Brother HL 8370

Brother MFC 9010 CN

Brother MFC 9010 CN Color

Brother MFC 9120 CN

Brother MFC 9120 CN Color

Brother MFC 9120 CN Color MFP

Brother MFC 9125 CN

Brother MFC 9320CN

Brother MFC 9320 CN Color

Brother MFC 9320 CN Color MFP

Brother MFC 9320CW

Brother MFC 9320 CW Color MFP

Brother MFC 9325 CW