So i bought a ASUS GEFORCE GTX 750ti from New Egg So i am comfortable taking out the old video card and install ing the new one in the bottom bay where the current video card was. I am currently running El captain The one thing that worries me is that it didn't come with a 6 pin adapter but from what I have read about this card is it does not need to be connected to the power supply. So before i removed my current video card I downloaded the most up to date firmware and confirmed that the computer is going to boot with the NVIDA Web Driver. Are there any other trouble shooting things I could try? Thank you in advance!