Brother DR-350 Black Drum Unit is designed to perform in the Brother MFC-7220, 7225N, 7420, 7820, 7820N, HL-2030, 2040, 2070N, DCP-7010, 7020, 7025, IntelliFAX 2820, ,2910, 2921.
Brother DR-400 Black Drum Unit is designed to perform in the Brother HL 1030, 1230, 140, 1250, 1270, 1435, 1440, 1450, 1470, P2500, IntelliFax 4100, 4750, 5750, MFC 8300, 8500, 8600, 8700, 9600, 9700, 9800.
Brother DR-510 Black Drum Unit is designed to perform in the Brother MFC-8220, 8440, 8640D, 8840D, 8840DN, DCP-8040, 8045D, HL-5130, 5140, 5150D, 5150DLT, 5170DN.