@danager ,
You are absolutely right. It is indeed a switching power supply. My goal for the current build is to "build my first desktop". I have never done this before. But after 2 days of searching the internet, I am almost ready once the parts come in and I have to order a few more.
As for LSP, that will be in the future. If you need a really good LPS, then check out the following link:
https://www.acopian.com/single-l-goldbox-m.html
These LPS are made in the US and have "ripple: of 0.25 to 1.5mV, which I understand is fantastic.