Lexmark
41X2051
is compatible in the following Printer Models:
Lexmark Mono Laser
Lexmark B2546dn (4600-630)
Lexmark MS521dn (4600-630)
Lexmark M1246 (4600-690)
Lexmark B2650dn (4600-830)
Lexmark MS621dn (4600-830)
Lexmark MS622de (4600-835)
Lexmark M3250 (4600-895)