Geeetech

I have an i3 X that is working great. I would like to add a fan and shroud, and have one fan connection still open on the board.
If I hook the fan up, does it always stay on, or can I control that port for the fan so that it is one when printing and off when stopped?
If so, some help on how?
Thanks.

So I have a Prusa i3 X Acrylic. Impressed so far. Some build issues, and one of them was adjusted for in software.
The Y axis 0 switch mount position was too far back, so the part of the bed that hits it, triggers it about 35 mm behind where it should be.
Some friends adjusted it for me by making ...

I just drilled the holes out myself. This was more to let you know that it is very frustrating to have old manuals when the parts have changed and even the youtube videos are wrong.

It isn't that it is missing. It is just the wrong instructions. Instead of one aluminum part 37 I have extra part 36, and would need to use two of these in place of one aluminum one. Problem is that the acrylic parts have 4 holes drilled for a part 37, instead of 8 holes drilled that I need to use 2 ...

I am following the steps and on the building instructions for the X axis motor mounts they have a part, 37, that isn't included. This is supposed to be an aluminum sleeve bearing holder that screws in with 4 screws.
Well it looks like I am supposed to use a couple of the black smaller sleeve bearing ...