Everprint CHIP-EPS-MB-T6711-E is a replacement chip for the Epson T6711 waste-ink maintenance container, also referenced as C13T671100. It is intended for use when servicing that container, so the printer can recognize it after the chip is replaced.
The listed compatible reference is Epson T6711. The chip is identified as Black. This is a small service component for the maintenance container rather than a complete printer consumable. Its purpose is to support reuse of the container after servicing; the listing does not specify extra capacity or other performance figures.