Brother TN115BK High Yield Black Toner Cartridge High-yield toner cartridge is designed for use with Brother MFC-9440CN, 9450CDN, 9840CDW & DCP9040CN, 9045CDN, HL-4040CN, 4040CDN, 4070CDW. Black yields approximately 5,000 pages. Color yields approximately 4,000 pages.