Lexmark
41X2581
is compatible in the following Printer Models:
Lexmark Mono Laser
Lexmark MS331dn (4601-230)
Lexmark B3340dw (4601-280)
Lexmark B3442dw (4601-480)
Lexmark MS431dw (4601-480)
Lexmark M1342 (4601-489)
Lexmark MS431dn (4601-4a0)