How to get the power button LED to work?

EnvyX2

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Jul 26, 2011
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My case (Coolermaster HAF 912) apparently has 2 LEDS in the front of the computer between the power and reset button.
I have a Gigabyte Z68XP-UD3 and when I build the computer (first build) a while ago I noticed something that said POWER LED +/- or something like that on the motherboard, you connected the USB 2-pin and some other stuff to it.
My question is, how can I get the LED to show up so I can know when the computer is on or on sleep mode. This isn't important, I don't exactly need it but it would be useful sometimes.
Thanks.