This is absolutely ridiculous -- that with the 757s and 320s -- we have to play this roulette. Something tells me this is an easy install -- given that there are actual ports already built into the seats.
I log the nose numbers on which I fly -- and I note if a particular aircraft had empower. I then very nicely ask one of the resident UAers to find out the nose number of an upcoming flight to see if I should bring extra magazines or not.
My blood boils when I sit down and see that stupid plastic cover over the socket.