And it only gets harder to plug in once you start adding other cables and components, making it progressively difficult to do later on.
Don't forget this last step, because the supplemental CPU power connector is one of the harder cables to install, jammed as it is near the top of the case. And it only gets harder to plug in once you start adding other cables and components, making it progressively difficult to do later on. And if you forget to plug it in altogether, your system won't boot.