The TN570 from Brother International is a laser toner cartridge designed to work with Brother DCP8040, HL5140, HL5150D, HL5150DLT, HL5170DN, MFC8220, MFC8440, MFC8840D, and MFC8840DN printers and multi-functions. This monochrome black replacement cartridge delivers a yield of up to 6,700 pages at 5% coverage and is a genuine Brother product, so you know it will work properly with your printer. The TN570 also comes backed with a 30-day return warranty.