Toner cartridge is designed for use with Brother DCP-9040CN, DCP-9045CDN, HL-4040CDN, HL-4040CN, HL-4070CDW, MFC-9440CN, MFC-9450CDN and MFC-9840CDW. All genuine Brother printer supplies are designed as part of an entire printing system to provide a superior degree of quality. Genuine Brother toner is delicately balanced to provide even flow and toner distribution. Cartridge yields approximately 1,500 pages at 5 percent coverage on letter-size paper.