Lexmark cyan return program toner cartridge provides up to 1, 000 standard pages in accordance with ISO/IEC 19798. Accurate technology. Genuine quality. Environmental focus. It\'s Lexmark\'s nature. Compatible With Lexmark C540 Laser Printer Lexmark C540n Laser Printer Lexmark C543 Laser Printer Lexmark C543dn Laser Printer Lexmark C544dn Laser Printer Lexmark C544dtn Laser Printer Lexmark C544dw Laser Printer Lexmark C544n Laser Printer Lexmark C546dtn Laser Printer Lexmark X543 Laser Printer Lexmark X543dn Laser Printer Lexmark X544 Laser Printer Lexmark X544dn Laser Printer Lexmark X544dtn Laser Printer Lexmark X544dw Laser Printer Lexmark X544n Laser Printer Lexmark X546dtn Laser Printer Lexmark X548de Laser Printer Lexmark X548dte Laser Printer