Lexmark
40X3743
is compatible in the following Printer Models:
Lexmark Multifunction Color Laser
Lexmark X940e (7510-030)
Lexmark X945e (7510-230)
Lexmark Color Laser
Lexmark C935dn (5057-230)
Lexmark C935dtn (5057-230)
Lexmark C935hdn (5057-230)
Lexmark X940e (7510-030)
Lexmark X945e (7510-230)