Your PSU has the 20+4 pin ATX connection, that plugs into the 24 pin ATX connection on your mobo.
Your PSU has an 8 pin CPU connection that you will not use.
Your PSU has a 4 pin CPU connection, that plugs into the 4 pin CPU connection on your mobo.
Your PSU has lots of 4 pin molex connections, plug one of them into the 4 pin molex connection under the last PCI slot on your mobo.
Those are all the power connections between PSU and mobo you should have. Does that help?