Hi, my case has PN connector cables for PSW - and +, wich are power switch. But my MB has PWR and Ground. PSW has red in one and orange one in + and red in -, is there any way to know wich is PWR ground and wich is PWR?
What case do you have ?
There are generally seperate wires for the switch and the led's.
Polarity matters for the led's, but it's fairly simple, plug them in, if they don't work turn the connector around.