|The HDD & power LEDs have polarity & must be connected properly (+ to +, - to -). If you have them plugged in incorrectly, they won't be damaged; they simply won't work. If that's the case, just reverse them. The power & reset buttons don't have polarity so it doesn't matter which way you connect them, but you must plug them into the correct pins.|
From the following: http://i.fixya.net/uploads/images/n...
HDD LED = pins 1(+) + 3(-)
Power LED = pins 2(+) 4(-)
reset button = pins 5 + 7
power button = pins 6 + 8