When you refill a LEXMARK 12A5740, 12A5745, 12A5840, 12A5845 or 12A5849 cartridge, you must replace the chip. This chip is already included with our refill kits.
When you refill a LEXMARK 12A5740, 12A5745, 12A5840, 12A5845 or 12A5849 cartridge, you must replace the chip. This chip is already included with our refill kits.