In general, the "HDD" and "Power" LEDs are bare LEDs without current
limiting resistors, meaning that the necessary current limiting will
be provided by a series resistor on the mobo.

Your case LEDs, on the other hand, being designed to be powered by a
power supply connector (I'm guessing it's going to be the 5 volt half
of a Molex drive connector), will have their own current limiting
resistor[s].

If you connect the "art" LEDs to the HDD drive connector it should
cause no damage, but you may be quite disappointed in the level of
brightness you achieve.  If you want to play around with some kind of
transistor drive circuit you could get full brightness, but that would
involve knowing whether the drive to the HDD LED is "active high" or
"active low" and would also involve having some knowledge on how to
design a simple transistor drive circuit.

Curt

On Jun 16, 4:56 pm, "./aal" <[email protected]> wrote:
> On Tue, Jun 16, 2009 at 4:33 PM, Chris
>
> McQuistion<[email protected]> wrote:
> > You can swap the power LED and HD LED on a motherboard with no ill effects
> > (I've miss-plugged them, plenty of times) so if you just want to know if you
> > can plug the power LED into the HD LED header, then the quick answer is yes.
> > Chris
>
> actually I was interested in powering the "art" leds in the case from
> it, so the current could be significantly different
> (not to mention the V if the leds are in series, but I can change that)
>
> --
> -- NOT sent from an iphone,blackberry,Nokia, or any handheld. --
>
> I'm a PC(x86 AND ppc)
> AND I RUN LINUX!!!
> Linux is like ice cream. It comes in many flavors and everyone has
> their favorite, but we all get the same smile regardless of which we
> choose to scoop.
> -
> George Bernard Shaw  - "Reading made Don Quixote a gentleman.
> Believing what he read made him mad." 
> -http://www.quotationspage.com/quote/30694.html
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