I decided to make my old Dell (now a linux box) some bling(ish) so I grabbed some LED's, a switch, a terminal block, and some wire, a molex, and some resistors. You only need one (value depending on 12 v or 5 volt--I had 6 because I did not have a correct value) Very simple mod, but soldering skills were required. I just hotglued the LED's to the front panel of my case, and drilled a hole for the microswitch. A $10 mod that is very simple and looks very good.
Step 1: This is the original computer
This is the original computer. Any computer will work, but the grille in this computer is perfect for invisibly making it glow.
sorry for the sideways--just turn yer head
Step 2: Create the module for installation.
From left to right:
SPST switch-2 LED's wired in paralell-terminal block-resistors-molex-power supply cord (NOT part of project)
See schematic image for wiring. One does not need a terminal block-any prototyping PCB will do. It was just convenient for me.
Step 3: Final product
Here is what it looks like. Note the switch, and light placement.