not sure if this even belongs here on byoac (power question) update

[SpeedEng]

im sorry im not sure where this belongs

got a off beat question

have you guys/gals ever seen this type of power plug?
http://www.laptopspower.com/img.php?id=a12.80.04&w=300
http://www.lcdpart.com/images/4pDin.jpg

how can I find out which one is power and ground (on the mother board side) because I dont have the psu (tryin to make one if I can )

update found out from gigabyte
power is DC input of 19volts 6.32amp

[kelemvor]

Could get a voltage meter and find out...

[DaOld Man]

I first thought that too, but then I double read it, and he said he didnt have the power supply, just needs to know what connections to attach another power supply to on his board.

SpeedEng: Do you have a make/model/version number of the motherboard?
It should be printed somewhere on the board.
That may help to find a manual on the net, which may show the pinout connections.

[xar256]

It looks to me like a power supply used by old IBM laptops. (P1 and the like).  Need info on the mainboard before we can be of more help.

[BobA]

I had an LCD monitor that needed a new PS and did not have info on the power plug.   It was the same config as yours (4 pins).  Turned out 2 were +12V and 2 were ground.  I established which were ground by disassembling the LCD monitor so I could see the power connection to the PC board in the monitor.   This told me which pins were paired.  This can also be confirmed with a ohm meter.   To establish the gound I checked how the pins were connected and looked for the gound plane of the PCB.  It is usually the largest conductive area.  To make sure this was the ground I checked the polarity of any electrolitic caps that were connected to it and established where the (-) lead was.   To double check my work I traced the other lead which was 12V power to some regulators and other chips to establish the power pin.   

Sorry but a fairly detailed examination of the PCB is required but it is one way to check if you cannot find a manual.

[SpeedEng]

I had an LCD monitor that needed a new PS and did not have info on the power plug.   It was the same config as yours (4 pins).  Turned out 2 were +12V and 2 were ground.  I established which were ground by disassembling the LCD monitor so I could see the power connection to the PC board in the monitor.   This told me which pins were paired.  This can also be confirmed with a ohm meter.   To establish the gound I checked how the pins were connected and looked for the gound plane of the PCB.  It is usually the largest conductive area.  To make sure this was the ground I checked the polarity of any electrolitic caps that were connected to it and established where the (-) lead was.   To double check my work I traced the other lead which was 12V power to some regulators and other chips to establish the power pin.   

Sorry but a fairly detailed examination of the PCB is required but it is one way to check if you cannot find a manual.

Thank you and others that have posted im gunna try this out

btw the mb is a Gigabyte GA-8igvt aka TA4 barebones system

I tried looking all of google and nothin

[SpeedEng]

update

found out from gigabyte email
power is DC input of 19volts 6.32amp

the bottom two (# 1 and 2 http://www.lcdpart.com/images/4pDin.jpg) are grounds after checking it with a ohm meter

so I guess the top 2 (3&4) all i need is a 19volt source? (based on gigabyte email power requirement?)

does this sound right? any way to test this before I shove a laptop power lead in?

[DaOld Man]

Are you sure the power supply you plan to use supplies 19 volts?
You might want to try the to find the power supply that was intended for it.
Maybe search ebay, or ask gigabyte if they can sell you one.

[SpeedEng]

Are you sure the power supply you plan to use supplies 19 volts?
You might want to try the to find the power supply that was intended for it.
Maybe search ebay, or ask gigabyte if they can sell you one.

I emailed Gigabyte and the item is discontinued (they system is a good 7 years old)
and for me to contact fortron

I emailed fortron and nothing

so im kinda on my own