tagan easycon 580 connections help please

Hi all
i have a tagan easycon 580 psu and a asus a8n-sli deluxe board

1,which 12v connection do i use the p4 or the p4+ seperate cable it has its own conection on the psu the p4 is inside the psu next to the 20/24 pin power cable...
2,where do i screw the ground/rtn cable to in the manual it says to a screw fitting on your mother board if near any components check for short circuts,

can i screw it to the case instead ,do i really need to conect it it has a rubber cover over it...
thanks for any help with these

Maximus

There are two for the 4-pin 12v cable but one is covered with little red caps: don't use that just use the other one. The grounding cable you need to remove the coverfirst: remove one of the motherboard mounting screws, pop it onto the grounding cable and re-attach it to the board. It's entirely optional if you want to do this though and if you don't, leave the cover on.

THANKS MATE
NOW I CAN FINISH MY BUILD
mAX

HI
sorry for caps

when you say motherboard mounting screw you dont mean the copper standoff the board sits on do you

thanks for any more
help

cheers
Maximus

Any mounting whole is a ground, just attach this thing under a screw that holds the motherboard to the copper standoff.