Question about Gigabyte GA-7N400 Pro2 Motherboard

1 Answer

Front panel wire installation guide

I received a G33T-SM3 motherboard and am trying to complete the installation. I need help with how to install the front panel wires. Does anyone know where I can find a schematic of what wires to connect where? It has been so long since I have done this I have forgotten most of what I knew. Thanks.

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  •  Angela Bates
    Angela Bates Jul 17, 2013

    This is for a G33t-SM3 motherboard. Not sure why it keeps coming up as a Gigabyte GA-7N400 Pro2 Motherboard but it is a G33T-SM3 motherboard. Not sure who makes it, but that is the only identification I can find on it at this time.

  • WTF Chuck.....
    WTF Chuck..... Jul 17, 2013

    Sounds like a Supermicro part #, If you can take a picture that would be great!

  •  Angela Bates
    Angela Bates Jul 17, 2013

    It was a Supermicro. The model is the C2SBA+II and I was able to find the online manual and set up the connections as shown in the manual. It doesn't power up when I press the power button. I got this motherboard off of craigslist, how do I know if it is a motherboard issue or a power button/case issue?

  • WTF Chuck.....
    WTF Chuck..... Jul 18, 2013

    Do you happen to have a volt meter? you can check the wires that go to the power button and see if its not working...if you need further assistance, i'll be glad to help:)

  •  Angela Bates
    Angela Bates Jul 18, 2013

    no. it is on my list of things to get though. Is there any other way to check between now and payday?

  • WTF Chuck.....
    WTF Chuck..... Jul 18, 2013

    I usually, when building/testing scrap systems, just grab a 3mm straightblade and short the 2 switch pins. If it still doesn't turn on, unplug the 20 pin connector, and short the green wire to ground (make sure you're insulated from any metal or wires) while the PSU is plugged into a load, and see if it kicks on.



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Hi Angela,
Most of the connections are pretty standard for MB's.
This should help you.
Thanks and don't forget to rate:)

front panel wire installation guide - 456214a5-39da-4d8b-b193-9be8e5e1b6dd.gif

Posted on Jul 16, 2013

Testimonial: "Very helpful. Thank you for the quick responses and the suggested manufacturer. I was able to find the manual and connect the dots. ;) Thanks Gary!"

  •  Angela Bates
    Angela Bates Jul 17, 2013

    Thanks Gary. That helps some but still doesn't solve my problem. I will have to try to take some pictures and upload them to show you what I mean. I appreciate the prompt assistance though!



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Posted on Jan 02, 2017

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SOURCE: wiring up a motherboard

Hi Tony,
My search came up with PCChips M825 motherboard.
Try this link.

Good luck Tony!


Posted on Jul 13, 2008

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How to connect the power led,power sw,hdd led on e-machine t2240

Apologizes your question hasn't received a solution until now. I have been 'away from my desk' for a while.

The eMachines T2240 desktop pc uses an Intel D845GVSR motherboard.
So let's go to Intel Support for more information, and to the specific product download page for the Intel D845GVSR motherboard,

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On this page left-click right on the blue title -
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After you have downloaded the PDF file go to the top left and hover your mouse cursor on the rectangular icon. (To the left of the Up/Down arrows and Page: )

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On Page 11 in the Product Guide we see that S designates the Front Panel Header.
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In case you are not able to view the Product Guide;

Viewing the motherboard installed in the computer case, the Front Panel Header lays parallel to the bottom of the motherboard, at the Bottom Right.

It is rectangular in shape and has 9 pins.
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The pins are numbered Even along the Top row;
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The pins are numbered Odd along the Bottom row;
Starting from the Left going to the right;
Pins 1, 3, 5, 7, and 9.

A) Pins 1 and 3 are for the Harddrive Activity LED.
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In case the HDD LED is dim when the HarDDrive is active, switch the wires around. (Computer off and Anti-Static Precautions used)

B) Pins 5 and 7 are for the Reset switch, IF a Reset switch is used.
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C) Pin 9 is for 5 volt ( + ) power. Not Used.
(Usually the motherboard manufacturer uses this pin to test the motherboard)

D) Pins 2 and 4 are for the Power On LED.
-> Believe Pin 2 is for the Positive ( + ) wire.
If PWR LED is dim when computer is on, switch the wires around.

E) Pins 6 and 8 are for the Power On switch.

There is No Pin 10.

For additional questions please post in a Comment.


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