I have worked out that that the Remote pin works like the Green "Power Supply On (active low)" wire on an ATX supply, and found a wiki on remote sensing about it being used to get diagnostics on the power-supply (if I understand correctly)
Now I have a little red wire that does nothing, with .5V on it. I am viewing pins 1 and 5 on This
Just curious, Is it perhaps simply a case of leaving a wire in because the standard connector/wire has X terminals and axials? It is called the "Reserved" pin, and other sites cite it as a second "Remote pin" even though it does not activate the power supply.