The Brother MFC-9120CN uses compatible TN-210BK black toner, which yields about 2,200 pages, plus TN-210C cyan, TN-210M magenta and TN-210Y yellow toner at about 1,400 pages each. All are standard yield. A compatible 4-pack is also available. The same supplies fit the MFC-9125CN, HL-3040CN and HL-3070CW. Free shipping on orders over $50 in the contiguous US.
