That’s easy enough, but what if you type in the wrong key or just want to change it (add it) later? You might even have gotten a new MAK.
That is not
as easy, you cannot do it from the graphical interface, you have to do it from
one of the configuration files. Well you might to it from graphical interface
by typing it in every time deploying a computer gets deployed but that is not a great
solution.

