Just wondering, how much power (voltage) do the motherboard headers give out? This is on a ultra-D, but I assume all mobos are equal in this department?

I want to add 1 LED to the case's HD LED, so I can route it to the side of the case.

I also assume both the power & HD LEDs are the same voltage?

yea i thing 3.3-3.6 max....

just search for pc leds and some site offer alot of info... I remember reading some goos stuff when I was looking for the wifes pink and purple leds...

Have you stuck a DMM across the Current victi...I mean subjects LED, because as far as I know the most common voltage for an LED is 1.5 Volts, but there is a HUGE range of them. also you'll want to throw a 150 Ohm or greater (pending calculations) resistor in the mix to keep the current flow from burning out your LED...
a good source for such things are...

Jameco.com
digikey.com
mouser.com

here's a resisitor calculator: http://www.quickar.com/noqbestledcalc.htm

Thanks guys, I got some reading to do

I was going to to something siilar.
I was going to replace the red and green case LED's with Hi intensity bule ones.
BUT, I didnt know is it was giving 1.5v for a standard low intensity LED, and waht that would do if i put 3.3v LED's in there?

it may do nothing, it may create a short, or it may burn out your LED, we don't know the volatge coming off of your motherboard. if you want to take a DMM to your mobo headers and find out, you can figure out the resistance you need for a current limiting resistor...also you will need to know the maximum current output of the motherboard header...

How would one get to know the maximum current the header supports then? I read that just by using a meter will not cut it, since there is no load. If the case has a red LED, then it will report lesser than if the case had a blue LED.

There has to be some kind of standard someplace, or people who swap out cases would get very different results based on what the motherboard makers decided.

From what I have been reading so far, 2.2V is about minimum, 3 is average, with some going to 5.

I would either contact DFI-Tech Support (I don't think Happy will know much about this unless he has some schematics and a good calc on hand), or try to find an average online, because even if the voltage is right if you have an LED that draws too much... POOF

also you could try using a smal wire and measuring it with the current LED in place as the load...just make sure to put the meter inline in the circuit...

IIRC it's 5v, but I can't swear to it...