Lexmark C540 dw 21PPM Color Laser PrintersLexmark C540 n 21PPM Color Laser PrintersLexmark C543 dn 21PPM Color Laser PrintersLexmark C544 dn 25PPM Color Laser PrintersLexmark C544 dtn 25PPM Color Laser PrintersLexmark C544 dw 25PPM Color Laser PrintersLexmark C544 n 25PPM Color Laser PrintersLexmark C546 dtn 25PPM Laser PrintersLexmark X543 dn 21PPM Color Laser PrintersLexmark X544 dn 25PPM Color Laser PrintersLexmark X544 dtn 25PPM Color Laser PrintersLexmark X544 dw 25PPM Color Laser PrintersLexmark X544 n 25PPM Color Laser PrintersLexmark X548 de 25PPM Laser PrintersLexmark X548 dte 25PPM Laser Printers