I'm building my first computer, and the video card I have is MSI R6670-MD1GD5 Radeon HD 6670. I was watching a video that said you needed to plug in a cord to supply power to it, but I can't find where to plug it in. Does the motherboard supply power for this card or what?
Only high-powered graphics cards require a second rail for power beyond what is provided by the PCI connection.
It looks like neither of the R6670-MD1GD5 need any additional power, and so no connector is present on the card to accept it.
So yes, the motherboard provides all the power needed for this card.