Compatible with the following printer models LEXMARK C540, LEXMARK C543, LEXMARK C544, LEXMARK C546, LEXMARK X543, LEXMARK X544, LEXMARK X546, LEXMARK X548 | 2,500 pages (estimated page yield provided based on 5% coverage or at ISO 2471 pattern/normal) | Colour: Black | Original Equipment Manufacturer Number (OEM): WBC540H2KG