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On Mainoard DNB71-BC where is the power conector button in the front panel?

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Posted on Jan 02, 2017

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adnanbhatti
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SOURCE: Problem with panel front conector in Dell Dimension 2200 motherbo

The following information is to assist you in performing the right connections. You should take precautionary measures such as grounding yourself and completely disconnecting the PC form any source of power.

This picture shows the connector for the front panel power button, reset button, and power and hard disk lights: an 8x2 pin connector with 1 pin missing:



0505a76.jpg
The table below lists the pinouts for the connector. The orientation of this table is the same as the picture above, this shows the top part of the connector. All the pins below pin 8 appear to be non-connected.


f07048e.jpg


Each pair of pins labeled Power and Reset goes to the 2 wires for the corresponding button. The hard disk and power LED wires connect to the corresponding LEDs, you need to ensure the proper polarity of the + and - wires for each LED or it will not illuminate.

The above information is for your information only.

Posted on Mar 01, 2010

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joecoolvette
  • 5660 Answers

SOURCE: power front panel conectors on acer 915m08

This Foxconn 915M08-G-8KS motherboard made for Acer Veriton desktop computers?

http://www.sella.co.nz/general/computers/components/motherboards/other-motherboards/b1jnj6/

Do not know what the Front Panel header pinout is.

(Front plastic part of computer tower is the Front Panel.
Area of contact pins on the motherboard, that the wires (Cables) from the Front Panel connect to, is the Front Panel header )

CAN see by clicking on - View full size image - that the Front Panel header is to the Top Left corner of the motherboard, by the CMOS battery.
(View of mobo is upside down, in relation to how it actually sits in the computer tower case)

Shows me it is just the normal two rows of contact pins used in a LOT of desktop computer mobo's. (MOtherBOard)

If it were I, I would use one of the LED lights connected to two wires, and touch across each two sets of pins.

Looking at the motherboard as it sits in the computer case, there is a row of pins on Top, and a row of pins on Bottom.

In your mind start at the LEFT side of the pins at the TOP.
Number them from Left to Right.
Example, Pins 1, 3, 5, 7, and 9.

Now number the pins on the Bottom, from Left to Right,
Pins 2, 4, 6, 8, and 10.

Computer plugged into power, touch the two wires of the LED light, to Pins 1 and 2.
Computer doesn't start? (Power Supply turns on)
Go to the next set of pins.

I am willing to bet Pins 5 and 6 turn the Power Supply on.
No? Keep experimenting.

What will happen if you touch the WRONG pins?
N-O-T-H-I-N-G
You will NOT hurt the motherboard.

When you get to the correct pins, the Power Supply will turn on.
These pins are for the Power On switch.

Now go back through the pins with the Power Supply on, but DO NOT touch the pins that turned the Power Supply on.

When the LED light STAYS on, you have the pins for the Power On LED light.

If the LED light BLINKS, you have the HarDDrive activity LED light.

If Windows starts to load, and you touch the Restart switch pins, the computer will restart over again, and Windows will load again.

(IF this computer has a Restart switch. I do NOT use one, even for the older computers. Just press CTRL, ALT, and DELete keys at the SAME TIME, to restart the computer, or use the Task Manager option)

One pin left all by itself? That is for 5 Volts, and only used by the factory. Leave it unconnected.

There may also be a blank spot on the Front Panel header, where it looks like a pin is missing. This is the KEY pin, and is not used.
It is just to orient where the other pins are.

Worried about getting shocked?
There may be a small spark, as you connect the wires, I will gramnt you that.
But the voltage is 5 VOLTS DC.
In comparison two D cell flashlight batteries produce 3 VOLTS DC.

The harmful AC voltage is contained in the metal enclosure, of the Power Supply. Can't get you unless you pour water on it close up, or stick a metal rod through one of the ventilation holes, in the Power Supply enclosure.

Regards,
joecoolvette

By the by. You could be a lot of people's hero, if you came back, and posted the pins for what they do. Post in a Comment.

Posted on Jun 09, 2012

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According to the information you gave it seems it can still be the RAM. I've had a few PC's unable to startup due to bad memory.

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in chapert 4 > system board componenets (page 67 of the manual), it is listed as component number 22.

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Hello, i was made a search in google, i guess you must look it too, and a don't get nothing, but, I think i've a solution for you, according my own experience, i've installed 2 kinds of different MB, and, althoug there are different brands, the connection pins are the same, ie, the front panel connector that connect HDD Led, Power Led, Reset and Power, is a 9 pin conectors (really have 10, but 1 pin is cut for reference) and commonly is called PANEL 1

Then, i guide you

2 8
. . . . this will be 2,4,6 and 8 pins (from left to right)
. . . . . this will be 1,3,5,7 and 9 pins
1 9


Power Led + in pin 2
Power Led - in pin 4
Power Button # or + in pin 6 (It's no critic the orientation, it have no polarity, is a push buttom)
Power Button GND or - in pin 8

HDD Led + in pin 1
HDD Led - in pin 3
GND from Reset Buttom in pin 5
# from Reset Buttom in pin 7

THE PIN 9 has no connection

Source: My own experience, and check this instalation manual, at 21st Page

http://download.asrock.com/manual/Wolfdale1333-D667%20R2.0.pdf

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2 Answers

Problem with panel front conector in Dell Dimension 2200 motherbo


The following information is to assist you in performing the right connections. You should take precautionary measures such as grounding yourself and completely disconnecting the PC form any source of power.

This picture shows the connector for the front panel power button, reset button, and power and hard disk lights: an 8x2 pin connector with 1 pin missing:



0505a76.jpg
The table below lists the pinouts for the connector. The orientation of this table is the same as the picture above, this shows the top part of the connector. All the pins below pin 8 appear to be non-connected.


f07048e.jpg


Each pair of pins labeled Power and Reset goes to the 2 wires for the corresponding button. The hard disk and power LED wires connect to the corresponding LEDs, you need to ensure the proper polarity of the + and - wires for each LED or it will not illuminate.

The above information is for your information only.

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