Librem 11 power source and screen output


I’m wondering what the power source for the Librem 11 consists of (weight and dimensions). The specs mention only a DC-in port. A AC power adapter is sold in the store but it appears to apply only to the 13 and 15.

Also the 1st video on the product page shows a dual external screen setup. How is this possible ?
dual screen mode ?
From another topic I somehow understood that the device in this video was mostly a “design proposal”, and the specs mentions only one micro-hdmi port which unlike DP doesn’t support multiple streams (daisy-chain). Could someone confirm this ?

Thanks in advance,