Lexmark 55B0ZA0 55BOZAO Compatible Imaging Unit ( drum Unit) Page Yield: 40,000 Pages For Use In Lexmark Printers: B3340dw, B3442dw, M1342, MB3442adw, MB3442i, MS331dn, MS431dn, MX331adn, MX431adn, MX432adwe, XM1342