I put Dell 25UXR A12870-408 in my browser search bar, in the hopes of seeing the motherboard, and the Front Panel header.
The above was the best search hit I got.
Ebay is a little whacked with their search engine, sometimes; but the above made me wonder.
Why would you list the Asus TUV4X ,along with the Dell motherboard I am looking for?
Probably just their search engine trying to advertise anything close.
Motherboards do not seem to be the same, except they all use a Socket 370 processor socket.
So out of curiosity, I would like you to look at the Front Panel header, on an Asus TUV4X,http://www.ebay.com/itm/ASUS-TUV4X-Socket-370-Motherboard-W-SL52P-800Mhz-CPU-Heatsink-M425-/251197524658?pt=LH_DefaultDomain_0&hash=item3a7c8a0ab2
Set your mouse cursor in the middle of the photo, to use the
Zoom In feature.
Now move all the way to the right, to the right of the bottom white PCI slot.
Immediately above that bottom PCI slot, is a row of pins.
You can almost make out FRT_PANEL.
(Of course I'm using a 26 inch HDTV for my main monitor, and that helps, lol!)
What my question is, are the pins in a row/s like that on yours?
Oh, photo of the Dell 25UXR?http://www.ebay.com/itm/Dell-25UXR-A12870-408-Socket-370-ATX-RDRAM-Motherboard-PIII-SL4C8-1-0-GHz-CPU-/190754347389?pt=US_Motherboard_CPU_Combos&hash=item2c69d8597d
Yes, even with this large monitor, THAT photo does me no good.
(RCA L26HD31. I'm using dual monitors. Also using HP 2009M)
If the Front Panel header pins are arranged like that, I believe we can use the old process of elimination.
Looks like an 18 or 20-pin header.
Some of those pins are used for a speaker. (Guessing)
Some of those pins are Not used. (Not guessing)
The procedure is to have the Power Supply plugged in, then use an LED light to test with.
Old Power On LED, or Harddrive activity LED, whatever.
Just needs to be a TWO wire LED.
Let's number the pins.
Let's say they are numbered ODD for the Top row, and EVEN for the Bottom row.
I don't know where Pin 1 is. Should be a 1 silkscreened on the motherboard, next to Pin 1.
For this example let's say it is on the Top row, and all the way to the LEFT.
That would make the Top row pinout, from LEFT to RIGHT;
Pins 1, 3, 5, 7, 9, 11, 13, 15, 17, and 19.
Bottom row, from Left to Right;
Pins 2, 4, 6, 8, 10, 12, 14, 16, 18, and 20.
My thinking is to touch the two wires from the LED, to Pins 1 and 3.
Power Supply doesn't come on?
Go to Pins 5 and 7.
Go along the Top row, then go along the Bottom row; in this fashion.
When you get to the 2 pins for the Power On switch, there will be a tiny spark, and the Power Supply will come on.
Using an LED light you cannot cause any harm to the motherboard.
HOWEVER, the Power On switch is a Momentary Contact Switch.
Do NOT keep the LED wires on the Power On switch pins, more than 2 seconds.
Power Supply on, and running.
Now, touch two pins, and the LED blinks?
HarDDrive activity LED light.
LED stays on?
Power On LED light.
Restart switch pins.
Usually it will be the first 8 pins that will be used.
4 on the Top row, 4 on the Bottom row.
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