Lexmark
40X1523
is compatible in the following Printer Models:
Lexmark Multifunction Color Laser
Lexmark X543dn (7525-131)
Lexmark X543dn /DBCS (7525-133)
Lexmark Color Laser
Lexmark X543dn (7525-131)
Lexmark X543dn /DBCS (7525-133)