This is a genuine black toner cartridge for Brother HL-40xx series. Its capacity is 5000 pages on A4 page format at 5% coverage.Compatible Printers: Brother MFC-9450 Series, Brother DCP-9042 CN, Brother HL-4070 CDW, Brother MFC-9440 CN, Brother DCP-9040 CN, Brother MFC-9840 CDW, Brother MFC-9440 CDW, Brother HL-4050 CDNLT, Brother DCP-9045 CN, Brother MFC-9445 CDN, Brother HL-4050 CDN, Brother MFC-9450 CLT, Brother MFC-9450 CN, Brother HL-4040 CDNLT, Brother DCP-9042 CDN, Brother DCP-9045 CDN, Brother MFC-9450 CDN, Brother HL-4040 CN