TRYING TO HOOK UP MU POWER BUTTON NEED TO KNOW

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

There is usually a set of pins on the corner that are labeled get a magnify glass and light up the board take the glass and look down on one of the corners it is usually on the right corner of the bottom of the board at the bottom of the desktop case. You will usually see a series of abbreviations. LED, HDD, PWR, RES or RE the pins are marked. Now on the wires to the power button you will see the same wire abbreviations. Just hook up the HDD wire to the HDD pin the PWR to the PWR button wire and so on. RESET wire is RE or RES etc. Those really are the only three you will need. Not sure of the exact abbreviations. But they are lettered enough for you to match them. The best thing to do is try to download the board specs and get a look at the pins one side is neg and the other is positive it would be to your best interest to find the mother board specs for you mother board since you went all over the internet and could not find the board specs. just match the LED and the others they are marked PWR is the main and HDD is just showing when the HDD is working. The reset is for the button to reset the computer. It is basic and not that complicated really. Thanks for using FixYa! John

You pretty much need a flashlight and a magnifying glass to have a look see at the header on the motherboard. The pinout is printed on the board in _very_ small print. The LED's are the only ones that require polarity to work. Connecting the wires wrong won't hurt anything...it just won't work the way it is supposed too. A little trial and error may be in order.
Another, more accurate solution, is to go the manufacturer's website for that computer and download the user manual. The pinout will be in the manual, usually under "front panel connections".

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.

Here is the pinout. Note key pin 2 missing.
1 2
reset+ O X key
reset- O (gnd) O pwr sw +
pwr led+ O O pwr sw -
pwr led- O (gnd) O hdd led+
-- O O hdd led-
| O O --
| O (gnd) (gnd) O |
n/c -| O O |- n/c
| O O |
-- O (+5v) O --
19 20

Here is pinout. Pin2 key is missing pin
1 reset+
3 reset- (gnd)
5 pwr led+
7 pwr led- (gnd)
9 n/c
11 n/c
13 n/c (gnd)
15 n/c
17 n/c
19 n/c
2 key (missing pin)
4 pwr sw +
6 pwr sw -
8 hdd led+
10 hdd led-
12 n/c
14 n/c (gnd)
16 n/c
18 n/c
20 n/c (+5v)

n/c = no connection

the symbol is there writen there on the board or abrivation you can follow it.. like( pwr sw/ Hddled/ spkr..

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.

You can download the complete user manual in English from the manufacturer's website at this link:)

http://support.asus.com/download/download_item_4.aspx?product=1&model=P4B533&SLanguage=en-us&os=17

The front panel connector pinout is on page 2-33, or page 59 in the PDF file. You should have mor ethan enough information to make all the connections you need.

Hi bwalker24,
This is a pic of how to connect you're LED & switches.
Enjoy!

Mike