Energy Star logo. Counterfeit Airport Extreme?

I have come across an eBay listing for a "new" replaced AirPort Extreme, and noticed in the second photograph an Energy Star logo printed on the bottom of the back of the router.

You can view the listing by clicking here.

Is this a counterfeit product? I have not seen a single other photo of an AirPort router with this logo on it. Nor can I find anything on Google or the web about it. As far as I was aware, even if Apple's products met Energy Star specifications, they do not, or never have, printed the logo on their products.

Anybody know?