I haveOkay, so for your 2nd picture I'm more interested in seeing these:
You want the PCIe x16 slots as shown above, I think yours will be black in color, each expansion slot will be marked as you can see in the picture, it's actually written on the motherboard itself so you will be able to find it the same way.
Looking at the back of your case, on the left side of your photo you can see the metal brackets that are removeable so you can have the video output, etc, of your graphics card come through the back of the case, seems one of them has already been removed previously.
Another thing, do you have the original monitor that came with it? Because most graphics cards you buy nowadays will not have a VGA output which that setup came with natively, what does your video cable look like?
If it's VGA, you will need to find a VGA-DVI adapter for your monitor unless the monitor itself also has DVI/Display Port support.
2X SMALL PCI (BLACK) (X2?)
I use a VGA cord, however I also I have an HDMI & Display Port cables, it's just that currently my monitor doesn't support DP and my PC doesn't have HDMI, I am willing to buy a cheap passive adapter for my DP tho( it's a P++)
Also thank you to everyone helping I'm finally getting a clear view on how everything is coming together