it pains my heart to see posts like this.
If you do not even understand the basics of how a GPU fits into a mobo then you have no business trying this mining game.
Do yourself a favor and at least spend 5 seconds reading before you drop 2k to build a mining rig.
I have a similar feeling.
First he gets the wrong mobo and it takes him more than 30 days to realize it. Now he wants to go radical and try to use
a PCIe splitter. Chances of success = 0.
I didn't check the specs of the mobo but I assume it has 2 x16 slots and probably a couple of x1. This is very usable for mining,
but more importantly for learning.