You are correct.
I use them to run my DVD player. (Load limit is 75W, which will work for most laptop computers; though not mine as mine is really a "portable" that "Hoovers" up a whopping 145W!
, being a Dell Inspiron 9100 I bought for doing heavy duty graphics and 3-D picture renderings when on trips, more than a year before I found FlyerTalk and started flying a lot. My AC adapter is literally nearly the size of a brick.)
Easiest way to compare features, like power ports, is the comparison charts on
www.SeatGuru.com
http://www.seatguru.com/charts/domestic_economy.php
http://www.seatguru.com/charts/domestic_first_class.php
AA's coach exit rows I think all have power (except the RJs and turboprops), as well as all business and first class seats, which is what most of us see.
It's usually every other row has power in AA coach (again, except the RJs and turboprops), so it does pay to double-check
www.SeatGuru.com to be sure to have it.
Steve