This motherboard Adam?http://h10025.www1.hp.com/ewfrf/wc/document?lc=en&dlc=en&cc=us&docname=c00906137
Can't help you.
OH, I'm just KIDDING!
The front of your computer is the Front Panel.
The area of pins on the motherboard, that the main wires from the Front Panel go to, is the Front Panel header.
On the motherboard the Front Panel header is marked as PANEL1.
Scroll the page down, until you come to Motherboard layout.
Click on the + sign to the left of it.
Shows an illustration of the motherboard.
Bottom/Right corner is PANEL1. The black rectangle that is sitting vertically, in the motherboard photo.
Motherboard installed in computer case, the Front Panel header is two columns of contact pins.
FOUR on the Right side, FIVE on the Left side.
I don't know the actual numbering of the pins, so I'm going to number them myself;
Starting on the Left side at the Top, going down,
Pins 1, 3, 5, 7, and 9.
Starting on the Right side at the Top, going down,
Pins 2, 4, 6, and 8. There is NO Pin 10.
A) Pins 1 and 3 are for the HarDDrive activity LED (Light)
Pin 1 is for the Positive ( + ) wire.
If the HDD LED is dim when the harddrive is active, switch the wires around.
B) Pins 5 and 7 are for a Reset switch, IF a Reset switch is used. If not, do not connect to them.
C) Pin 9 is N/C. Not Connected. It was a +5 Volt power for the factory.
D) Pins 2 and 4 are for the Power On LED (Light)
Pin 2 is for the Positive ( + ) wire.
If the Power On LED is dim when the computer is on, switch the wires around.
E) Pins 6 and 8 are for the Power On switch.
F) NO pin 10, just a blank spot.
How to find out what wires are what, in that Front Panel harness connector?
Follow the wires from the connector, up to the Front Panel.
Front Panel removed it is easier to see where the wires go.
You can follow the color code of the wires, and see which twisted pair go up to the Power On switch.
You can also see which ones go to the Power On LED.
(Light Emitting Diode, so it is a light)
Reset switch, (IF there is one), same thing.
The only pair of wires that will be left is the HDD LED wires.
HarDDrive activity LED.
The 9-pin plug will have to be CAREFULLY cut apart. Separate the wires, AND their metal terminals. (WATCH your fingers!)
For additional questions please post in a Comment.