It seems pretty clear from the first picture that it's a male HMDI plug on one end and a female plug (which looks like the standard Android phone USB plug) on the other end. I don't see any images of the device plugged into a TV without a power cord (correction: there is one animation in the Plug and Play section if you mouse over). The images are just of the device on its own, so it doesn't seem deceptive to me.
You comment made me curious: is it possible for things to be powered by HDMI? There is definitely a 5V pin as part of the HDMI spec, but I can't find a good source for details.
You comment made me curious: is it possible for things to be powered by HDMI? There is definitely a 5V pin as part of the HDMI spec, but I can't find a good source for details.