The eMachines T3104 desktop computer uses an FIC K8M-800M motherboard.
FIC is First International Computers (Inc.)http://www.e4allupgraders.info/dir1/motherboards/socket754/fick8m800m.shtml
A Socket 754 motherboard for AMD processors.
This is the download page for a free motherboard manual,http://www.elhvb.com/mboards/OEM/eMachines/manuals/index.html
Go to the column in the middle, 8th file down.
Click on K8M-800M
A small window will come up on the right -
If the circle to the left of - Save File - does not have a green dot in it, click on the circle.
Now go below, and click on OK.
A small window will come up on the left. In the top of the window, tells you where the file will download to in your computer.
It may have Desktop, or My Documents, or Downloads, in the wording.
(Vista and Win7 is Desktop, Documents, Downloads)
Desktop: The file will be on your desktop screen.
Click on Start, then on My Documents.
Click on Start, then on My Documents. DOUBLE-click on Downloads.
When you see the file name, DOUBLE-click on it.
Disregard the following if you are aware;
This is a Zip file. A Zip file is used to send a large amount of information.
It is condensed.
The zip file needs to be unzipped. ('Un-condensed')
Go to the far left side, and click on Extract all files.
Follow the easy instructions.
(Essentially just click on Next, Next, and Finish. Do NOT change any settings )
In the last window you will see K8M-800M_manual to the right of the Adobe PDF icon.
Double-click on it.
If the view is too large reduce it with the Zoom Out icon. This is the Minus symbol ( - ) at the top.
(Zoom In is the + symbol )
At the top of the PDF file is the page number box. It is only related to the PDF file itself, and not to the actual page number of the manual. It is to the right of the Down Arrow.
Go to Page 20 in the PDF file.
(You can use the Down Arrow to arrive at page 20, or;
Put your mouse cursor in the PDF page number box.
Press the Enter key )
Barring that you cannot download, or open the motherboard manual;
Looking at the motherboard in the same direction, motherboard installed in case.
Processor to the Top, Ram memory slots to the right, white PCI slots at the bottom.
The Front Panel header on the motherboard is at the bottom right.
Rectangular connector with two rows of pins.
Pins across the Top are numbered ODD.
Pins across the Bottom are numbered EVEN.
Starting at the Right side going towards the Left, on the Top row;
Pins 1, 3, 5, 7, and 9.
Starting at the Right side going towards the Left, on the Bottom row;
Pins 2, 4, 6, and 8.
There is No Pin 10.
A) Pins 1 and 3 are for the HarDDrive activity LED light.
If the LED light is dim when operating switch the wires around.
B) Pins 5 and 7 are for a Reset switch, IF a Reset switch is used.
C) Pin 9 is not used. N/C. (Not Connected)
D) Pins 2 and 4 are for the Power On LED light
If the LED light is dim when on, switch the wires around.
E) Pins 6 and 8 are for the Power On switch.