...This is actually wrong and the laptop only has ONE port for all that stuff unless you get an $80 adapter. I had to triple check this since the idea of mixing all the (IMO) necessary ports of a laptop into a single port is just bad design to me. Like I think I mentioned before, I've got a little Dell tablet with this configuration and it sucks when you want to charge the device and use a USB peripheral at the same time.
It just seems like a more expensive Macbook Air with a Retina Display, but with less ports. That'll probably be a fine trade off for the people looking for a superlight laptop, but for the exact same price I would rather have the heavier more powerful Macbook Pro with Retina Display and a shitload more ports, and use a tablet for anything I need a lightweight device for.