Purchase your OEM (Genuine) Lexmark C540X75G toner cartridge from us and save on product price and fast and inexpensive shipping. This OEM Lexmark C540X75G cartridge is a genuine Lexmark toner cartridge that delivers excellent performance and exceptional prints. It works with Lexmark C540 C543 C544 C546 X543 X544 X546 X548 CS310 CS410 CS510 CX310 CX410 CX510 XC2132 and more.