Lexmark 12A8400 Laser Cartridge Average yield of 2,500 pages based on 5% coverage Includes prepaid mailing envelope for returning used cartridge Genuine Lexmark product Guaranteed by manufacturer to be free of defects Compatible with select Lexmark E-series laser printers : E230, E232, E234, E238, E240, E242, E330, E332, E340, E342, E332n, E342tn, E342n