So I just all of the parts for my first gaming computer. I've installed everything except this one chord, and I can't figure out what it's for and I haven't booted at all in fear of breaking something. The chord has a plug similar to the pcie plugs, and that fits in the graphics card , but on the other end of it , it is white with three spikes inside, it Is a cable tech cable. I'm using an Asus m975 le r2 motherboard. Thank you