Where would I connect these cables?

I've nearly finished my Node 202 build and I've gotten to the point where I'm connecting my motherboard. Most of the cables have been easy to connect but there are a few left which I have no idea about.

The first set of cables are joined together. They are labeled 'POWER SW' with two pins, 'POWER LED +' with one pin and 'POWER LED -' and one pin. The second cable is labelled 'PCI-E' with six pins and two pins. My third cable is labeled 'CPU' with eight pins.

My motherboard is the Gigabyte GA-AB350N, and there is a diagram provided which doesn't seem to be helping me, but I think it's just a case of me not understanding it.