Question about PC Chips M825G Motherboard

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Pluged in pwr and restart and hdd led but where is speaker plugin?it is 4 pin but only has 2 wires either end

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Speaker connectors are strange on most boards. They tend to be 4 in line pins but only the two outer ones are used. So you will see
0000 pins shown for the speaker connector but the only ones you use are the x's - X00X or the two end pins.

Posted on Jul 30, 2009

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Dell motherboard diagram of wiring and front pannel connectors


most front panel connectors with a 4 x 5 pin configuration are intel compliant, and are all the same.
The "nine" pin is missing, and is the "KEY" to orientation, no matter which way the pins are situated on the board.
1 3 5 7 X
2 4 6 8 10

1= HDD LED+, usually green
3= HDD-, usually white or black
2= PWR LED+, usually red
4= PWR LED-, white or black
These are polarity specific, and must be connected to the proper + and - terminals to work properly

5= RESET
7= RESET
9 is missing, can be used to determine location of other pins
6= PWR
8= PWR

Thes are momentary contact pins, can't get them backwards

Pins 6 and 10 are jumped together in the Dimension 2400.

Apr 18, 2014 | Dell Dimension 2400 PC Desktop

2 Answers

Front panel connections


I don't find the Front Panel header pinout online, nor do I have an MSI MS-5191 in the shop.

I would suggest using one the LED lights with two wires.
(3-wire is a dual color LED)

There are two rows of pins. Usually the Power On switch, Power On LED, and Speaker; are on the same row.
HarDDrive activity LED, and Reset Switch are on the opposite row.

Speaker has 4-pins designated for it. All the others use 2-pins.
(Unless the PWR ON LED is a dual color jobbie)

Touch two pins next to each other, in the same row; with the 2-wire LED.
Start with finding the Power On switch first.

Usually the top row 1st two pins are Power On LED (Light)
Next in line are the 2 pins for the Power On switch.
Bottom row 1st two pins are usually HarDDrive activity LED (light)
Next 2-pins are usually Reset switch.

May not apply to a motherboard old enough to use a Socket 7 processor socket.
There may be 18 to 20-pins.
Bear in mind that many are not used, and probably 4 are for an internal speaker, for hearing BIOS Beep Codes.
May be two separate Front Panel headers.

Once you find the two contact pins in the Front Panel header, for the Power On switch; I would put the Power On switch wires on.
The small pin connector on the wire/s, will keep you from accidentally touching these two pins again, when the computer is on.

Now you have the two pins for the Power On switch, and the computer is running; then keep touching 2-pins at a time with the LED. (Light Emitting Diode)

LED stays on? You have the Power On LED (Light) pins.
LED blinks? HarDDrive activity LED (light) pins.
Computer restarts? Reset switch pins.

Look for abbreviations near the pins in the Front panel header.

PWR, Pwr, Pwr On, Sw, and SW; are just some of the abbreviations for the Power On switch.

HDD LED, and HDD are two for the HarDDrive activity LED. (Light)
(If it states HDD SW it is the Power On switch. Weird old way of marking)

RST, Reset, and RSW, are for the Reset Switch.
(Reset Button)

If you see 4 pins marked with a bracket ( [ -> Turn so it's horizontal), these are for the internal speaker.

Type MSI front panel connector in your search bar, and look at -> images. See if you can find an image of your MSI Front Panel header pinout.

You can bet MSI carried out that Front Panel header pinout, on other MSI motherboards, besides the MS-5191.

The MSI MS-5191 may have been a motherboard made by MSI, especially for a pre-built computer manufacturer, and not listed on their website as an OEM motherboard.
(Original Equipment Manufacturer)

Won't have the Front Panel header pinout, listed on MSI's support website. (Doesn't)
But you can bet there IS an OEM motherboard made by MSI, that the Front Panel header DOES match.

May be different expansion slots, or motherboard chipset, or whatever; but the same Front Panel header pinout.

Regards,
joecoolvette

Jan 05, 2013 | AMD MicroStar MS-5191 Socket 7 mATX...

1 Answer

I have a GA-81865GME-775-RH motherboard, which i put into my box, made all the connections, but have no power once I switch the box on. I suspect it has something to do with the wiring loom running from...


Hello julian_ad681

I will tell you how wire your case front panel, but before that lets test the motherboard to make sure the problem is not the board itself.

Remove all the wire connections to the front panel.

Turn the power on and with a small screw driver or anything that is metal short (touch) the two pins that are the PWR SW. (look at the list of pins I have put at the end)

If the computer turns on then it means the board is ok.

The following information is also availabe in the motherboard manual available from the gogabyte web site download section

On the motherboard next to the battery is the front panel header pins. it looks like

0 0 0 0 0 0 0 0 i also write them as numbers as well to make it easy for you)
0 0 0 0 0

1 2 3 4 0 0 0 0
5 6 7 8

1 and 2 are message LED. you don't need any connection to this.
3 and 4 are the power switch connections no polarity, just connect the wires
5 and 6 are the hard disk LED. 5 is the positive side (usually red)
7 and 8 are the reset switch. no polarity, just connect the wires.
Next to the message LED there is a three pin connection. This is for the power LED.


hope this has helped you.

please leave comment, vote if the helped

Feb 10, 2011 | Intel Motherboard

1 Answer

What colors are the wires for the pwr sw, smi,rst,hdd led,grn led and where so i plug them in at s7sen 15-a01-013010 rev 3.0a


- the colors of the wires (can differ, depends on the case type):
  • Green(+ is the colored wire)-White(-) --> POWER LED (GREEN light)
  • Red-Black -> POWER SWITCH
  • Red-White -> HDD LED (RED light)
  • Blue-White -> RESET
  • Red-Black (4 pins wide)-> SPEAKER

df64004.jpg

Sep 03, 2010 | EliteGroup K7SEM Motherboard

1 Answer

Power Button wire to mother board power led power sw HDD Led . what pin connects to the three wires from power button. Led Power wire to what pins, HDD Led to what pins and power SW to what pins on the...


There are may motherboards, but most have writing on them as to what is suppose to plug where. For example, for the power switch, the lettering might be "Pwr" or "Power" or "Pwr sw". The pins are usually together and should fit the plug on the end of the wire.

Nov 25, 2009 | E-Machines eMachines Desktop PC

1 Answer

TRYING TO HOOK UP MU POWER BUTTON NEED TO KNOW


Hi there
The front panel connectors are mainly,
  • harddisk activity connector
  • power switch connector
  • reset switch connector
  • power LED connector
  • speakers connector
  • USB connector
Harddisk activity connector
This normally comes red in colour and is labeled as HDD-LED
Power switch connector
This comes green in colour and is labeled as POWER-SW
Reset switch connector
This usually comes grey in colour and is labeled as RST-SW
Power LED connector
This is usually green in colour and is labled as PWR-LED
Speakers connector
This speaker will give different beep sounds during boot to tell the user if there is any errors. It occupies 4 pins, however only 2 is important for the function. Be sure to connect the red coloured cable to the positive polarity and the black to the negative.
front_panel_connectors.jpg Front panel connectors pins on the motherboard
front_panel.jpg Front panel connectors from the casing

Good luck and thanks for using FixYa!!

May 13, 2009 | eMachines T6420 PC Desktop

2 Answers

I have an 945gzt-m v 1.0 and dont know were the pwr sw wire goes


Yes.
First, let's orient the view of the motherboard, so we are both looking at it the same way.
The processor is at the top middle, and the Front panel header, is to the very bottom right hand corner.
Right next to the motherboard mounting hole.
The Front Panel header goes across the bottom edge of the motherboard, lengthwise.

Looking at the top row of pins on the Front Panel header, No.2 Pin is at the far left. Pins 2, 4, 6, 8 and 10, go across the top.

Looking at the bottom row, No. 1 Pin is at the far left. Pins 1, 3, 5, 7, and 9, go across the bottom.

The power switch wires go to Pins 6 and 8.
The HDD LED wires go to Pins 1 and 3.
The power LED wires go to Pins 2 and 4.

On the power switch wires, the Positive (+) wire goes to Pin 6. Just in case this wire is marked.
(Doesn't really matter which way it goes, because it's a switch!)

On the HDD LED wires, the Positive (+) wires goes to Pin 1.

On the power LED wires, the Positive (+) wire goes to Pin 6.

Apr 15, 2009 | ECS 945GZT-M (V1.0) Motherboard

1 Answer

Emachines t3830 I need the schematic for MB I umployed the wire for the push bottom without looking at the way they were plug. Now I do not know the correct aligning of the push bottom wires.


If you look at the motherboard there is usually a diagram labeled "FRONT PANEL HDR" that will tell you which pins are for: HDD LED, PWR LED, RESET, PWR ON. etc.
The chart / diagram may be a few inches away from front panel header.
the following example is from my emachine T2893 that I had opened because it won't power up.

the motherboard at the header connector labels pin #2 and with that you can figure out the other
pin numbers

example of diagram on motherboard (Confirm the pin numbers on your motherboard)


J9G1 PINS
| HD LED | 1 - 3 |
| PWR LED | 2 - 4 |
| RESET | 5 - 7 |

| PWR ON | 6 - 8 |

Hope this helps you figure which pins to hook you switch up to.

Jan 18, 2009 | E-Machines eMachines T3830 PC Desktop

5 Answers

Gigabyte GA-8INXP Motherboard Problem- front connector pins


If the wires from the reset switch is white/blue the blue wire is positive, Hdd red/white red is positive power Green/white Green is positive etc. The wires on the speaker connector will be red/black/black/white - red is positive. The colored wire is always positive. On all GA mb's the positive connection is always towards the back of the MB and are marked with a + on the base of the pin as you can see on the photo. Hope this help.

Sep 19, 2008 | Gigabyte GA-8INXP Motherboard

1 Answer

Motherboard pin config


All motherboards have a print beside the pins, Speaker= "speak", "pwr s" =powerswitch, "HDDled" red light on front, rst = reset switch [not allways used] "pwr led" Green led, the case wires are usualy marked on the plug ends with the same , "hdd" "reset" and so on. The power switch will work both way's around however the led lights wont. You will not hurt anything if they are the wrong way around, they just wont work so if you dont get lights just reverse the polarity. If by chance the case wires do not have labels the just trace them to the case front panel and plug them into the corresponding board pins. Regards mistyman

Aug 28, 2007 | Systemax Ascent PC Desktop

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