I have a Radeon r7 250x that I am trying to plug into an AMD am1m-s2h motherboard. I have been having trouble with it for a long time because I was under the impression that all I needed to do was slide it into the MB and thats it. I was wrong. I was getting a red light on my card that I now know know is supposed to be green. I think the way to fix this (other than the things I've already tried like updating drivers and whatnot) is to plug in a six pin cable. I have no extra 6 pin cables so I will have to get one but I don't know where to plug the other end of the cable into. Does it go somewhere on the motherboard or to the power supply? My power supply is a Corsair cx600m. Any help is appriciated, I just want to get this working properly.