These printers use the TN550 cartridge:
Brother DCP 8060
Brother DCP 8060 DN
Brother DCP 8065DN
Brother HL 5200
Brother HL 5240
Brother HL 5240 LT
Brother HL 5250
Brother HL 5250 DN
Brother HL 5250 DNHY
Brother HL 5250 DNLT
Brother HL 5250 DNT
Brother HL 5270 DN2LT
Brother HL 5270 DN
Brother HL 5280 DW
Brother HL 5280 DWLT
Brother MFC 8460 N
Brother MFC 8470 DN MFP
Brother MFC 8470 DN
Brother MFC 8660 DN
Brother MFC 8670 DN
Brother MFC 8860 DN
Brother MFC 8860 N
Brother MFC 8870 DW