Thread: Power LED mod
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Unread 09-16-2010, 06:54 PM   #1
Cooling Neophyte
Join Date: Sep 2010
Location: Melbourne, Australia
Posts: 1
Power LED mod

Hi all,

I would really appreciate your help in this matter if you can, as I looked in a lot of areas for many hours and couldn't find the right information.

I need to build a small circuit board having a bi-color LED to indicate a power ON state (Green or whatever) and S3 standby state (amber or whatever). And need the LED to turn off when computer in OFF state.

I have established that I need to use the 5vsb (brown wire - pin 9 from the atx power supply) but this will lit the LED even when computer is in OFF state.

So, later I found that I need to use a NAND gate to achieve the desired results. But I have no idea what a NAND gate is, neither what wires I need to use.

Thanks again for looking into this.
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