FeaturesBrand compatibilityLexmarkDevice compatibilityLaser/LED printerCompatibilityT640dn, T640n, T642, T642dn, T642n, T644, T644dn, T644dtn, T644n, T640 X642e (No Modem), X642e (With Modem), X644e (No Modem), X644e (With Modem), X646dte (No Modem),...