If the wire from JP5 to the motherboard's power switch header triggers power-on & power-off properly, then you don't need anything connected to JP6.
before I put my P2140 in a difficult to access location I need a clear answer on this.
I have the green and white wires connected to my mini-itx motherboard power switch. Does a jumper go across the 2 posts on JP6, put nothing there or ????
I'm assuming by putting a jumper across them you are initiating a signal out the green/white when power comes on.