For the following:
Kyocera TK-5160BK Black toner cartridge 16K yield at 5% coverage
Kyocera TK-5160C Blue toner cartridge 12K yield at 5% coverage
Kyocera TK-5160M Red toner cartridge 12K yield at 5% coverage
Kyocera TK-5160Y Yellow toner cartridge 12K yield at 5% coverage
Kyocera ECOSYS P7040cdn EUR region
Your toner cartridge will shut down at every cycle of 16K printed pages, leaving you unable to print, even though there may be plenty of toner left in the cartridge.
Slash printing costs by simply replacing the chips which shut the cartridges down, to extend toner cartridge life by up to 30-40%, or use the chip if you are refilling the cartridges, to get them working again.
Each chip lasts for one cycle of 16K printed pages, after which it must be replaced.

Regional Codes
WW – Worldwide, EXP – Worldwide except China, EUR – Europe, US – United States, NA – North America, SA – South America, AP – Asia Pacific, ME – Middle East, JPN – Japan