Does anyone know the actual power connector needed for the Air China A330-300 Economy section and for the 777-300 Economy section? Seatguru shows there's an outlet to share (no mention of connection type) on the visual map but then it says in the text description that there is no power available. The Air China website says, "Yes, one for two seats" but does not indicate what connector I would need. Blogs and forums from years past are of no help. I called Air China and they said, "I think it's USB" - sorry, "I think" doest help when I'm boarding. Also, I always get different vague answers whenever I deal with them. So does anyone actually know for certain (i.e., has been on the plane) to see what connector is needed? A picture perhaps?