Your PSU will power a couple of main things.
on that motherboard.
The main connection being a 24pin Connector which basically powers your motherboard. You'll see it on the East side of the motherboard. Biggest connection.
A 4-Pin Connector on the North - West side of your motherboard, which powers your CPU.
that is the only 2 connection from your PSU to your motherboard.
Note that your PSU will also have to be connected directly to your GFX card if you have one that requires it.
and your Hard Drive / SSD / etc.