Lexmark toner and ink cartridges. Please read our notice on the new Lexmark Industry policy concerning the firmware updating of your existing machine. The new firmware will prohibit the future use of compatible toner cartridges and restrict you to using only Lexmark brand print cartridges. This firmware update is PERMANENT and your machine will be locked out of using compatible lexmark cartridges. Don't be forced into spending high prices on genuine lexmark cartridges, when your machine can still accept low priced compatible ink and toner cartridges. Click Here for further information.