Brother Black Ink Cartridge - 2 Pack (LC41BK2PKS) - Retail Packaging For use with Brother DCP-110C, DCP-120C; IntelliFax-1840C, 1940CN, 2440C Works with MFC-210C, MFC-3240C, MFC-3340CN, MFC-420CN, MFC-5440CN Also compatible with MFC-5840CN, MFC-620CN, MFC-640CW and MFC-820CW Approx. 500 pages per cartridge