Today i went to go buy my computer parts to build my computer. I bought a XFX 750W PRO750W Core Edition Single Rail ATX 12V 62A 24PIN ATX Power Supply 80PLUS Bronze PSU. When i installed everything, I went looking for the cord that attaches onto the box and on the other end you plug into the outlet. Turns out the PSU doesn't come with one. I watched a unboxing video for this PSU and even they didn't have one. Where can i get one?