Bought new power supply. I now have a new ATX12V 4 pin connecter for a 12v connection as well as the standard ATX connector. Now, I've been reading and I'm a little confused, so I took a break and decided to post here. Do I use both of these connectors? Is the extra 4 pin just for more power or is the older 4 pin there for older motherboards? Let me show you waht I'm talking about. Am I to install both?