I'm currently using a Gigabyte GA-970a-D3P.
When I try to install a graphics card into the second PCI slot, it won't fit because there's these six metal circles one the end:
There's this two-prong metal thing on the bottom of the graphics card ...
The card will fit nicely if I fit it in the PCIex16 slot, but if I try and put it in the PCIe 4 slot, this prong will keep the card at a weird angle an keep it from going in straight.
At first, I thought it was because of these six metal circles on the side of the mobo, shown by the red arrow here:
But that doesn't make sense! There are also soe of those metal circles in front of the main PCI slot! Shown by the green arrow!
So how do I put in a second graphics card?