Thanks for reply mate! I actually started mining on it since I don't use it for gaming that much. So I wanted to beef up the hashrate I get on the single RX470 8GB GPU with possibly another similar GPU. So can't I even multiply the single PCIe slot with a PCI extender or something?
Not as simple as getting an extender. You would have to get a specific riser card and then have a motherboard that also supports what I recall to be called bifurcation. Which I doubt this board does, and its manual certainly doesn't mention it.
The cost would likely end up outweighing just getting a new GPU.
Theoretically there are adapters where you could connect them to other inputs, however you'd potentially have power draw issues.
Because you'd also need to PSU to be able to handle both too, and you don't want to run those on a cheaper / poor quality PSU.