New Build question

sufe70

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2
This may be a easy question.I may even already know the answer.But rather than risk damage I thought I would ask it.Since my last build power supplies have added a lot more connections. I have made all connections required but am stumped on my mainboards JPWR2 connection.The remaining connectors avail. from the PS are marked (SLI) (PCIe) and a 2 pin unmarked.
Then I have 2 connectors that look like ATX connectors (4pin square) One is marked CP the other U1.Which one of these plugs to the JPWR2? And does it matter. I'm thinking the PS gives 2 of these for boards that also have a JPWR3 header.
I am running a MSI 770 G45 board with a XION 630w PS.

Oh come on. Not a single answer? Thanks for all the help people.
 
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