Question about Acer AOpen AX4BS-V (91.89J11.001) Motherboard

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Electric on motherboard

Is there supposed to be a pin missing where the power comes from the front of the case, the pins that it plugs into the motherboard? There is two rows of pins and the bottom row has a pin missing The motherboard is Acer open AX4BS

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  • julie31061 Feb 05, 2009

    Ok I got the lil power things hooked up but when I try to turn it on all that happens is the fan on the CPU runs but the computer wont start......is this something I have done wrong?



  • julie31061 Feb 06, 2009

    I didnt mean to rate you as low i thought i said thanks for trying....sorry

  • Anonymous Feb 13, 2009

    realtekAc97 Audio

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  • Master
  • 2,692 Answers

Yes. usually. Most boards have pins missing. The board layout is for all boards,not all models. That is the reason that sometimes pins are missing. You will see layouts for other items(options) missing also.  Ido not have A drawing or picture of your particular board  though.

Posted on Feb 05, 2009

  • Thomas F. Schneider Feb 05, 2009

    I answered your question perfectly and now you have a different problem yet you rate me low. I have no interest in assisting you father. . 

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How do i connect this front usb cables,the mother board is ms 6533e ver10b


On the motherboard, looking at it from the front there should be 2 10 pin white usb headers to the left of the cmos battery labeled jusb2 and jusb3. There is a pin missing from each as well as a plugged hole on your connector coming from your front usb. Just line the missing pin up with the plugged hole on your connector. Hope this helps, have a great day.

Mar 13, 2016 | Computers & Internet

1 Answer

What's your problem? I need a schematic for my HP Pavilion slimline


http://h10025.www1.hp.com/ewfrf/wc/product?product=3688725&lc=en&cc=us&dlc=en&lang=en&cc=us

Ready for a long read?

A) Power Supply /Motherboard

Motherboard with no hardware components installed, nor cables attached,

http://h10025.www1.hp.com/ewfrf/wc/document?docname=c01321559&tmp_task=prodinfoCategory&cc=us&dlc=en&lang=en&lc=en&product=3688725

I also would like you to scroll down a little further, and click on the + sign to the left of - Motherboard layout.
Shows an illustration of the motherboard.

1) 24-pin ATX main power cable:
Looking at the motherboard illustration (Motherboard layout), look at the Top/Middle.
ATXPWR1 is where the 24-pin ATX main power cable plugs in.

In the photo you see - ATXPOWER and CPU_FAN above this black connector.

[ Processor fan {CPU Fan}, is the first white 4-pin connector, to the right of the black 24-pin ATX main power cable connector.

A Chassis, {Computer case} fan plugs into the next 3-pin brown header to the right.
That was the only space the motherboard manufacturer had, to mark the motherboard for those two connectors ]

This shows a general example of this type of power cable.
(Note color does NOT matter),

http://www.playtool.com/pages/psuconnectors/connectors.html#atxmain24

Note the Lock on the side (Middle) of this power cable's connector.
Also note the matching Tab on the motherboard connector.

The Lock operates like a see-saw on a playground. The top is squeezed in to bring the hooked end of the Lock, away from the Tab on the motherboard connector.
When this power cable is deemed to be plugged in properly, and tightly, the Lock's hooked end will be over the Tab.

That concludes the power cables coming from the Power Supply, to the motherboard.

B) Power Supply / Peripherals:

The Harddrive is a SATA unit. 500GigaByte, and has a 7200 RPM spindle speed.
There is a SATA power cable that plugs into it.
General example of a SATA power cable,

http://www.playtool.com/pages/psuconnectors/connectors.html#sata

Note that a SATA power cable has 15 contact pins. It is the longer of the connectors when comparing to a SATA data cable connector.
(7 pins)

The optical drive (CD/DVD burner that has LightScribe technology), is a SATA unit also. Uses a SATA power cable.

A) Data Cables:
The Harddrive, and optical drive require a SATA data cable.
General example of a SATA data cable, and SATA data connector on the motherboard,

http://en.wikipedia.org/wiki/File:SATA_ports.jpg

Note the SATA connector on the SATA data cable.
Has an L-shape on the inside. Lines up with the L shape on the motherboard connector, and Harddrive and optical drive connector.

The red connector shown is a SATA data cable connector, on the motherboard.
Looking back at the HP Support page, look at the illustration.
(Motherboard layout)

The Ram Memory slots are designated by XMM1 and XMM2.
To the bottom left of them are the two SATA data connectors.
SATA 1 and SATA 2.

In the motherboard photo you can see they are plainly marked.
SATA 1 is White, SATA 2 is Black.
The Harddrive plugs into SATA 1.
An optical drive will plug into SATA 2.

Most of the time a SATA data cable will have a 90 degree bent elbow, for plugging into the Harddrive, and Optical Drive.
The straight connector end plugs into the motherboard.

A) Processor Fan and Chassis Fan:
I have already stated where the processor fan plugs in, and the Chassis (Computer case) fan plugs in.

A) USB Front Panel:
The Front Panel is the front of your computer. The USB headers on the motherboard, USB1 and USB4, are where the front USB ports plug into.
These headers (Connectors) are to the right of the SATA data connectors. (F_USB1 and F_USB4)

A) Front Audio:

The long Black slot at the bottom of the motherboard, is a PCI-Express x16 slot. Used for a graphics card.
To the left of it is the Front Panel audio connector.
F_AUDIO1, and is Yellow in color.

A) Front Panel header:

As stated the front of your computer is the Front Panel.
The area of contact pins on the motherboard, that the main wires go to, is the Front panel header.

On the motherboard illustration it is at the Bottom/Right, and marked as F_PANEL1

Horizontal header, and two rows of contact pins.
4 on the Top row, and 5 on the Bottom row.

IF, I have this pinout correct;

Pins on the Top row are number EVEN.
Pins on the bottom row are numbered ODD.

Starting on the LEFT side coming towards the Right, Top row;
Pins 2, 4, 6, and 8. There is No Pin 10.

Starting on the LEFT side coming towards the Right, Bottom row;
Pins 1, 3, 5, 7, and 9.

A) Pins 1 and 3 are for the HarDDrive activity LED. (Light)
Pin 1 is for the Positive ( + ) wire.
If the HDD LED is dim when the Harddrive is active, switch the wires around.

B) Pins 5 and 7 are for a Reset switch, IF a Reset switch is used.

C) Pin 9 is N/C. Not Connected. (It's a 5 Volt power wire used for factory testing )

D) Pins 2 and 4 are for a Power On LED. (Light)
Pin 2 is for the Positive ( + ) wire.
If the PWR LED is dim when the computer is on, switch the wires around.

E) Pins 6 and 8 are for the Power On switch.

F) There is No Pin 10.

Hopefully you just have a cable with a connector on the end, that plugs into the Front Panel header.
Same with your Front Panel USB ports, and Front Panel audio ports.

After you have hooked up all cables, and deem to be finished, take the Ram Memory module/s ('Stick') out, and reinstall.
Most of the time they get bumped loose, and you CANNOT see by a visual inspection if they are.

Best method is to just remove them/it, and reinstall. This way you are ASSURED they are seated, and tight.

I Hope you have been FOLLOWING Anti-Static Precautions.
If not plan on using your motherboard, Processor, Ram Memory, Graphics card(?), and harddrive, for an expensive paperweight.

Anti-Static Precautions:
Your body carries Static electricity. Static WILL fry out (Short Circuit) the delicate hardware components inside a computer.

Relieve your body of Static electricity BEFORE reaching inside your unplugged from power computer, or removing any new parts out of their anti-static bags, or cartons.

Computer on a table, computer unplugged from power, computer case open;
TOUCH an unpainted surface, of the metal framework of the open computer case.
This action will relieve your body of Static.

IF you leave your computer in the middle of working on it, be SURE to Touch the metal frame again upon your return.

For additional questions please post in a Comment.

Regards,
joecoolvette

(You do have that computer laying on it's side, right? Much easier to work on. I use a static free, clean towel on the table, to protect the table, and the computer case )

Oct 04, 2012 | HP Pavilion Computers & Internet

1 Answer

Ms 7613 ver 1.1


http://bizsupport1.austin.hp.com/bizsupport/TechSupport/Document.jsp?objectID=c01946060&printver=true

View the motherboard photo at the Top, and also the Motherboard layout illustration, at a little over halfway down the page.

1) In the motherboard photo, all the way to the right side. View the Yellowish/Whitish connector, that has two columns of 12 socket holes.

This is where the 24-pin ATX main power cable plugs in.
In the motherboard layout illustration it is labeled - ATX1.

Here is a general example of this power cable, and respective connector on the motherboard,

http://www.playtool.com/pages/psuconnectors/connectors.html#atxmain24

Note that new Power Supply's, generally come with a 20+4-pin ATX main power cable.
This is so it can be used on the older computers that used a 20-pin ATX main power cable, and newer ones that need a 24-pin ATX main power cable.

Do not mix it's extra 4-pin power cable, with the 4-pin ATX +12 Volt power cable.

http://www.playtool.com/pages/psuconnectors/connectors.html#atxmain20plus4

Note the Lock on the side/middle. It has a hook on the end. The hooked end goes over a Tab, on the motherboard's connector.
The Lock works on the same principle as a see-saw on a playground.

You squeeze the top near where the wires come in, and this brings the hooked end away from the Tab, on the motherboard connector.
With the top of the Lock still squeezed in, the power cable is then removed USING the connector. (NOT the wires)

When assured that the power cable is plugged in tightly, and correctly, the hooked end of the Lock will be over the Tab, on the motherboard connector.

2) Look to the left of the Processor socket, and halfway in-between it, and the outside edge of the motherboard.
Whitish 4-socket hole square connector.

This is where the 4-pin ATX +12 Volt power cable plugs in. Power for the Processor. Note that it also has a Lock, with a Tab on the motherboard connector.

In the motherboard layout illustration it is labeled - PWR1

General example of power cable,

http://www.playtool.com/pages/psuconnectors/connectors.html#atx12v4

That's it for the motherboard as for power cables that plug into it.

The rest of the power cables from the Power Supply, plug into the optical drive/s, harddrive, and card reader if used.

4) If your harddrive is an IDE (PATA) unit, it will use a 4-pin standard Peripheral power cable. Same with an optical drive that is an IDE (PATA) unit,

http://www.playtool.com/pages/psuconnectors/connectors.html#peripheral

The computer case fan plugs into SYS_FAN1 connector, which is below the PWR1 connector. You may also have a computer case fan that uses the above power cable.

5) If your Harddrive, or optical drive/s are SATA, they will use a SATA power cable,

http://www.playtool.com/pages/psuconnectors/connectors.html#sata

6) A Card Reader uses a power cable, that is also used for a Floppy Drive.

It is a 4-pin Small Peripheral power cable.
Has the same voltage wires; (Yellow - 12 Volts, Red - 5 Volts), and two Black ground wires, but a smaller connector, than a 4-pin Standard Peripheral power cable,

http://www.playtool.com/pages/psuconnectors/connectors.html#floppy


The front of your computer is the Front Panel.
The area of wires on the motherboard, that the main wires from the Front panel go to, is the Front Panel header.

Although the Front Panel header has NOTHING to do with the Power Supply, I will include it also,

Motherboard positioned in computer case; Processor to the Top, Ram Memory slots to the Right;
The Front Panel header is at the bottom/right of the motherboard.

Black rectangle with 9 contact pins.
In the Motherboard layout illustration, JFP1 is marked under this header.

There are 4 pins across the Top row, 5 pins across the Bottom row.
The pins on the Top row are numbered EVEN.
The pins on the Bottom row are numbered ODD.

Starting on the LEFT side going towards the Right, Top row;
Pins 2, 4, 6, and 8. There is NO Pin 10.

Starting on the LEFT side going towards the Right, Bottom row;
Pins 1, 3, 5, 7, and 9.

A) Pins 1 and 3 are for the HarDDrive activity LED. (Light Emitting Diode)
Pin 1 is for the Positive ( + ) wire.
If the HDD LED is dim when the harddrive is active, switch the wires around.

B) Pins 5 and 7 are for a Reset switch, IF a Reset switch is used.

C) Pin 9 is N/C. Not Connected. Reserved for factory use.

D) Pins 2 and 4 are for the Power On LED.
Pin 2 is for the Positive ( + ) wire.
If the PWR ON LED is dim when the computer is on, switch the wires around.

E) Pins 6 and 8 are for the Power On switch.

F) Again, there is No Pin 10.

For additional questions post in a Comment.
Regards,
joecoolvette

Aug 15, 2012 | HP Computers & Internet

1 Answer

I am looking for MCP61PM-HM (Nettle) 9 pin front panel power header diagram


This motherboard Adam?

http://h10025.www1.hp.com/ewfrf/wc/document?lc=en&dlc=en&cc=us&docname=c00906137

Can't help you.









OH, I'm just KIDDING!

The front of your computer is the Front Panel.
The area of pins on the motherboard, that the main wires from the Front Panel go to, is the Front Panel header.

On the motherboard the Front Panel header is marked as PANEL1.
Scroll the page down, until you come to Motherboard layout.
Click on the + sign to the left of it.

Shows an illustration of the motherboard.
Bottom/Right corner is PANEL1. The black rectangle that is sitting vertically, in the motherboard photo.

Motherboard installed in computer case, the Front Panel header is two columns of contact pins.
FOUR on the Right side, FIVE on the Left side.

I don't know the actual numbering of the pins, so I'm going to number them myself;

Starting on the Left side at the Top, going down,
Pins 1, 3, 5, 7, and 9.

Starting on the Right side at the Top, going down,
Pins 2, 4, 6, and 8. There is NO Pin 10.

A) Pins 1 and 3 are for the HarDDrive activity LED (Light)
Pin 1 is for the Positive ( + ) wire.
If the HDD LED is dim when the harddrive is active, switch the wires around.

B) Pins 5 and 7 are for a Reset switch, IF a Reset switch is used. If not, do not connect to them.

C) Pin 9 is N/C. Not Connected. It was a +5 Volt power for the factory.

D) Pins 2 and 4 are for the Power On LED (Light)
Pin 2 is for the Positive ( + ) wire.
If the Power On LED is dim when the computer is on, switch the wires around.

E) Pins 6 and 8 are for the Power On switch.

F) NO pin 10, just a blank spot.

How to find out what wires are what, in that Front Panel harness connector?

Follow the wires from the connector, up to the Front Panel.

Front Panel removed it is easier to see where the wires go.
You can follow the color code of the wires, and see which twisted pair go up to the Power On switch.

You can also see which ones go to the Power On LED.
(Light Emitting Diode, so it is a light)

Reset switch, (IF there is one), same thing.

The only pair of wires that will be left is the HDD LED wires.
HarDDrive activity LED.

The 9-pin plug will have to be CAREFULLY cut apart. Separate the wires, AND their metal terminals. (WATCH your fingers!)

For additional questions please post in a Comment.
Regards,
joecoolvette

Jul 04, 2012 | Gateway MCP61PM-GM (4006254R) Motherboard

1 Answer

Needed to move motherboard to new case because of overheating / ventilation problems - do not know what the power / reset / hdd led leads are for the 9 pin f_panel (new case has each as separate...


Photo of the Asus M2N78-LA motherboard,

http://h10025.www1.hp.com/ewfrf/wc/document?lc=en&cc=us&docname=c01421635&dlc=en

This photo also shows the orientation (Direction), that the motherboard is sitting in a computer case.

To the very bottom right is the Front Panel header.

The front plastic panel of the computer is the Front Panel.

The area of pins on the motherboard that the cables, (Wires) from the Front Panel connect to, is the Front Panel header. ( F_PANEL )

The Front Panel header, is the black rectangular shaped plastic block, that is sitting vertically on the motherboard.

Has two columns of pins.
4 on the left side, 5 on the right side. Makes it look as though there is a pin missing, at the top left corner.

I'm going to number the pins.

Pins on the Left side starting at the Top, going down;

Pins 1, 3, 5, and 7.

Pins on the Right side starting at the Top, going down,

Pins 2, 4, 6, 8, and 10.


A) Pins 1 and 3 are for the Power On switch. (Power On button)

B) Pins 5 and 7 are for the Power On LED light.
Pin 7 is for the Positive ( + ) wire.
(If the LED light is dim, reverse the wires around)

C) Pins 4 and 6 are for a Reset switch, IF a Reset switch is used. (Reset button)

D) Pins 8 and 10 are for the HarDDrive activity LED light.
Pin 10 is for the Positive wire. ( + )
(If the HDD LED light is dim when operating, switch the wires around)

Pin 2 at the top Right is NOT used. (NC. Not Connected)

For additional questions please post in a Comment.
I am looking at a motherboard manual in PDF file form, for the Asus M2N78-LA motherboard.

Regards,
joecoolvette

Sep 03, 2011 | HEWLETT-PACKARD HP Pegatron M2N78-LA ASUS...

1 Answer

Hi i have a Codegen model 450x case and i am trying to install a Gigabite GA-P35-DS3R motherboard and am having troulbe with the start switch wires, the cases wires do not matgh the diagram in the...


I'm not sure what you mean when you say the case wires don't match the diagram. You might mean there is already a plug on the end of the wiring, and this plug doesn't match the board header. If you're reusing the case from a name-brand machine like a Dell or HP, this is possible. They often get custom versions of motherboards made, and their front panel connectors are usually a nonstandard layout. On the other hand, in a generic retail case, the front panel wires normally have separate connectors on the ends for the switches, indicator LEDs and any front panel USB and audio jacks.

This is the front panel header diagram I found in the manual for your board (I looked at version 2, but the connections should be the same if yours is a different version):

pgh_pa_guy_3.png

This board has an Intel standard layout for the header. If your wiring has separate connectors, the start (power) switch wires will plug onto pins 3 and 4. I have never seen a retail case come with anything other than a two-pin plug on the end of the power switch.

If you are dealing with a custom plug on your case's wiring, what you can do is remove the pins from the housing. They almost always are held in by a plastic tab on the connector shell that engages a tang on the pin. Use a thin object like a small flat-blade screwdriver or a knife tip to lift the tab and you can slide the pin out. Insulate each pin with small-diameter heat-shrink tubing if you have it, or a layer of electrical tape. (I prefer the heat-shrink tubing, which is neater and more permanent.) Then you can put each pin over the corresponding pin on the motherboard's front panel header. Unless the pins are very loose, they will stay in place by friction. I often use this technique when salvaging a case.

As for the CPU fan, be sure you have the connector over the right pins. Here is the diagram from the manual:

pgh_pa_guy_4.png

You might need to rearrange the pins in your fan power connector if they don't line up correctly. This layout looks a little strange.

Dec 21, 2010 | Codegen (PS-450W) (PS450W) 450-Watt Power...

1 Answer

USB power connector missing


The USB connections are in groups of 4 and 5 pins in parallel, with one pin missing at one end. The connector goes on, with its first pin(normally red) at the end that has both pins.

Sep 28, 2009 | VIA P4MA Motherboard

1 Answer

Front panel connectors


hey its in manual book which u got wit MB pack

Sep 18, 2009 | Intel Motherboard

5 Answers

Model name BLUFORD. E139765 motherboard. I need J16 pin layout for the power switch, reset switch, etc. Dell is not very helpful with this paticular board for some reason. Thank You for any info. DW


This is what I found after extensive searching,

......................O
.PWR LED- O O
.HDD LED- O O HDD LED+
.................... O O
.................... O O
.................... O O PWR LED+
.................... O O
...PWR SW O O PWR SW
.................... O O
.CON CNT O O CON CNT

Looks pretty lame, huh? I found this on Dell's Community Forum.
I gather, this motherboard was used in the Dell Dimension 2350.

http://support.dell.com/support/edocs/systems/dim2350/techov.htm#1101565

Looking, at what Dell has for the layout of the Dimension 2350 motherboard, there are 20 pins in the J16 header, just like he has crudely shown above. I don't see one missing in the corner, though. Of course, the link above is a crude example from Dell.

This person stated it was for the J24 header on the motherboard. Also stated that it was the Front Panel I/O header. (At least that's what was stated) I believe he was confused with the Control Panel header J24. Hopefully it is for the J16 Front Panel I/O header, as it has the Power On switch, HDD activity LED, Power LED, and so on.

Indications are that the O's represent the pins. There was a statement of taking -> Note, that there is a missing pin in the upper corner, and this orients the connector view, Orients, how you are looking at the connector. Only you will know for sure. I don't have this motherboard in front of me. Dell ISN'T giving ANY info out.

This person had the Bluford E139765 motherboard, in a Dell Dimension 2350.

The statement was also made, that there is a Brown jumper wire that connects the two CON CNT pins together, but didn't know if this jumper is required, as this person is putting this motherboard, into an aftermarket computer case. (?)

Solution?
What I would do.
I would have the power supply plugged in. I would use an LED lamp, with two wire leads attached to it. Leads of about two inches long, or more. (Borrow one out of the Front Panel, or from another parts computer?)

Twist the ends of the lead wires tightly. I would then touch the leads to two pins. Should they be power Out pins, (HDD activity lamp pins. Power LED pins, and so on), the light will light up, and not short out the two pins touched.

(If the LED light doesn't light up, no biggie. It just means the wires need to be reversed. Bear this in mind, when you go to hook the LED's up)

When the two pins for the Power On is found, the computer will turn on.

Judging by the crude diagram the missing pin is on the upper right.
Only you will know for sure, as the J16 header should have a flat place in one corner, where a pin would go. NO pin.

If so, this is what I see.

Processor to the left, PCI slots to the right, J16 header on the right, above the PCI slots. The header goes along the edge of the motherboard, lengthwise.

I'll number the pins like this.
Starting at the Top Left, and going down the Left side.
Pins 1, 3, 5, 7, 9, 11, 13, 15, 17, and 19.

Starting at the Top Right, and going down the Right side.
NO pin, (Would have been Pin 2),
Pins 4, 6, 8, 10, 12, 14, 16, 18, and 20

Pins 3 and 4 are for the Power LED. (Confusion here)

Pins 5 and 6 are for the harddrive activity LED. PIn 6 is for the + wire/

NO connection to Pins 7, 8, 9, and 10

Pins 11 and 12 are for the Power LED.
(Which ones to use? Pins 11 and 12, or Pins 3 and 4? I leave it up to you to test as the computer is on, and see)

NO connection to Pins 13 and 14

Pins 15 and 16 are for the Power On switch.

NO connection to Pins 17 and 18.

Pins 19 and 20 are for that jumper wire he mentioned. I would try it without it. If the computer doesn't come on, or something doesn't work, like the harddrive for example, I would unplug the computer from power, then attach this jumper. Plug in, and see if everything works.

Apr 19, 2009 | Computers & Internet

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