Only for original Apple adaptors??
I plugged mine today and nothing happens
Yes, I got it. Nothing that I can tell different.
Q-6 I think you have been waiting to update in part because of battery life concerns IIRC? I will say that 10.11.4 seems to have gotten battery consumption back to Yosemite levels, if not better. I have not seen my idle or low-usage power values so low since I first bought the computer.