RB2011 PoE

When did the RB2011 start shipping with PoE?

As far as I remember RB2011 models with PoE-out were first introduced about 3 years ago.
Note that model names of the boards with and without PoE-out are different.

I was thinking about complete systems.

Don’t pay attention to the word “board” (I just used it as a short form of RouterBOARD).
I meant the whole RB2011 series got PoE-out roughly 3 years ago and all the updated models got “i” in the model names.

Ah, I see. I’m missing the ‘i’.

Thanks.