I have a Corsair CX600M Power Supply and I've been trying for weeks to connect it to my Asus Radeon R7 370 Graphics Card. I'm a new builder and I cant seem to figure out how to connect the 8 pin to 6+2 pin PCI-E connector. I've tried researching forums but nothing makes sense. I figured that I plug the 6+2 pin side of the cord into my PSU and try to plug the 8 pin side into the GPU, but the 8 pin doesn't fit into my GPU. I don't have the pigtail cable that the PSU should come with. I read that that could be a possible solution, would I need to buy that? Would I need to buy a 6+2 to 6 pin cable? Any help is very appreciated, Thanks.