Toner Cartridges for Lexmark Printers from Xerox deliver brilliant image quality and excellent reliability at a low cost. Compared to the original Lexmark toner cartridge, you’ll get better or equal page yield, pay significantly less, and receive 100% lifetime warranty. Get more, pay less, without risk. Satisfaction is guaranteed.Compatible Printers: Lexmark X 646 Series, Lexmark X 640 E, Lexmark X 646 DTE, Lexmark X 642 E, Lexmark X 644 E, Lexmark X 646 E, Lexmark X 646 EF, Lexmark X 644 Series