Part
C540X75G
is compatible in the following Printers:
Lexmark C540n
Lexmark C543dn
Lexmark C544dn
Lexmark C544dtn
Lexmark C544dw
Lexmark C546dtn
Lexmark CS310dn
Lexmark CS310n
Lexmark CS410dn
Lexmark CS510de
Lexmark CX310dn
Lexmark CX410de
Lexmark CX510de
Lexmark CX510dhe
Lexmark X543dn
Lexmark X544dn
Lexmark X544dw
Lexmark X546dtn
Lexmark X548de
Lexmark X548dte