Z97 Use Integrated graphics card along with external graphics card.

There are two different z97 models by ASUS, as far as I know. One is z97 A and the ohther is z97 K. Make it sure which one is your. Then go to ASUS's website and download the Intel Graphics driver for your particular model.

If the proper driver is assigned, and the BIOS is not blocking the integrated graphics, then the monitor plugged in to the motherboard's end should work.

Well, Intel® HD Graphics is Processor Graphics. Generally it is said "onboard"; but it is not the board but the processor that processes the graphics.
And your Processor Intel Xeon E3-1231 v3 says ....

That is why the back panel display ports are not working.

If you apply a CPU of 1150 socket that has the ability to process graphics, the ports will work.

XMan3 said:

Hey, recently, I have came up with an idea of a fourth monitor, but my GPU (970) supports only three, which ones that I own. It has fourth one but I don't have the right cables for it for now.
I noticed that my motherboard has two open video ports, one being VGA which I needed. So, I tried just plugging it in and seeing what happens but it doesn't seem to work, I have tried looking for results around the internet and BIOS but they don't seem to work. The three monitors which I have plugged into my GPU, work perfectly fine, but, as I said, the motherboard's VGA port doesn't work. I have heard that such thing definitely is possible, but I cannot find out what I need to do.

Does anyone have an answer to this?

It's definitely possible. I've done that many times and here's a proof. This is my old PC running on HD 5450 video card (a low-end 3-monitor card) and the on-board video.



What CPU do you have? Do you see the monitor in display settings Window?

EDIT. Ooops.... sorry. I guess this thread is done.