? on antec true 850

Ok just got this psu and hooked everything up .

All my black 12v rails are filled and was wondering if the other two (pcie 3 and 4) are they just for pcie or can I use for what ever I need .. I looked in the destruction manual but was not alot to read ..

thanks 4 any info

can't recall where i saw this, but you can plug whatever you want into them. They are only red because they are on a seperate rail than the other black connectors which prevents you from hooking up your video card to the same rail as the mobo, etc. are on.