Pixel product photo question

Hi,
On the product page about the Pixel, there’s a photo of it plugged into a what looks like an AC adapter that’s plugged into the wall. It’s here:


If the Pixel has no ability to store data on an SD or microSD card, and it has neither Bluetooth nor Wifi as the product page seems to indicate, what is the purpose of plugging it into an AC adapter at all? Does it have some internal flash memory that it’s logging to?

Thanks.