Lexmark C543DN Laser Printer In addition to oustanding print quality and and rapid print speeds, the network-ready Lexmark C543DN has built-in duplexing for easy two-sided printing and it ships with high-capacity toner cartridges for great value. Lexmark guarantees, for as long as you own this printer, not to increase the price of toner cartridges for your Lexmark C543DN save even more when you enroll in Lexmark Rewards.