The Everprint CHIP-OKI-C834-10K-C is a cyan cartridge chip for the OKI C834, identified with reference 46861323 MEA 10K. It is intended for a cartridge that uses this chip and records cartridge status information for the printer.
The listing gives a stated yield of 10,000 pages at 5% coverage. The chip stores data such as the number of pages printed and toner use. When the cartridge's counters reach their set limit, replacing the chip allows a refilled cartridge to be used again, as described by the listing.