Premium Quality LC-203Bk High Capacity Black Inkjet Cartridge compatible with the Brother MFC-J4320DW, MFC-J4420DW, MFC-J4620DW, MFC-J5520DW, MFC-J5620DW, MFC-J5720DW. The use of compatible supplies does not void your printer warranty. Product Detail Ninestartechonline.com