Question about ASUS P5N-E SLI Motherboard

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Power cutting out

Was using my computer earlier. I moved case to the side to plug in head phones and the whole thing switched off.

Checked cables, turned it on, power supply and fans came on for a few seconds then off again. After a few tried all came on and it started up.

2 minutes later it turned off again.

Opened it, checked all cables, and turned on. Mother board made a low pitch beep (not normal one) the power supply and fans burred away happily, but the computer didn't start up/no signal to monitor.

Then I smelled burning.

Machine is less than a year old.

Power Supply - Antec neopower blue 650w modular
Motherboard - Asus Pn5-E (650i)
Graphics card - Zotac 8800GT 512

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Sound like processor has bit the dust, Attack supplier as you have on year warranty

Posted on Oct 31, 2008

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Disk read error press ctr+del to restart


SATA connector cable faulty or not plugged in properly or power not available for harddrive, or read-write heads of HDD broken or damaged. If this is the case, replace HDD. tests can start by using another harddrive with working operating system, or by unplugging both power and data cables to drive, as well as the data cable from board. be sure to power off the computer

Apr 01, 2014 | ECS Motherboards

1 Answer

Power supply diagram for ht 2000 motherboard


http://www.ebay.com/itm/ECS-HT2000-AMD-AM2-Socket-mATX-DDR2-800-Motherboad-w-NVidia-Graphics-/251260314586?pt=Motherboards&hash=item3a804823da


1) Uses one 24-pin ATX main power cable.

Motherboard installed in computer case, the motherboard connector for the 24-pin ATX main power cable; is to the Right of the Blue IDE (PATA) connector.
(Right side of motherboard)

General example. Note that color does NOT matter of connector,

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


2) Uses one 4-pin ATX +12 Volt power cable,

Motherboard installed in computer case, the whitish square 4-socket hole connector, to the Bottom/Left corner of the Processor socket; is the 4-pin ATX +12 Volt power cable's motherboard connector.

General example. Note color does NOT matter of connector,

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

THAT, would be considered a Power Supply diagram of the motherboard.

They are the only two power cables that plug into the motherboard.

The front of your desktop computer is the Front Panel.

The area of contact pins on the motherboard, that the Main wires from the Front Panel go to, is the Front Panel header.

Power On switch, Power On LED, (Light Emitting Diode), Harddrive activity LED, and a Reset switch IF used.

Regards,
joecoolvette

Apr 15, 2013 | ECS HP MCP61PM-HM Nettle3-GL8E 6150SE AM2...

1 Answer

Cant find my motherboard pin out


http://www.pcmag.com/article2/0,2817,2388344,00.asp?tab=Specs

With all due respect, you have the manual in front of you now

That is unless you started unplugging wires already, and didn't make notes, drawings, or take photos.

Let's use the Asus Essentio CM1630 motherboard for an example.
Couldn't find a CM1730, but that's OK. We'll use this one for a general example,

http://www.ebay.com/itm/OEM-ASUS-ESSENTIO-CM1630-MOTHERBOARD-61-MIBBJ5-01-TESTED-/181007679725?pt=Motherboards&hash=item2a24e600ed

Put your mouse cursor in the middle. Now move your mouse around, using the Zoom In feature.

If this motherboard were mounted in a computer case, it would be turned 90 degrees to the Right.
Bear that in mind.

The front of your computer is the Front Panel.
The area of contact pins on the motherboard, that the Main wires from the Front Panel go to, is the Front Panel header.
Goes by many abbreviated names.
PNL 1, FP1, PANEL1, etc.
(Panel 1, Front Panel 1, Panel 1)

Go to the Top/Right corner of the motherboard photo. To the 6 Blue SATA connectors.
Immediately to the bottom of them, is a white Front Panel header.
Two rows of contact pins sticking up.

You need to make notes, drawings, photo, whatever; of where the wires from the Front Panel, go to each one of those pins.
(Some may not be used)

How to know which wires coming from the Front Panel, are the Power On switch wires, Power On LED light wires, HarDDrive activity LED light wires?

Remove the Front Panel from the computer. If it is Not just a cover, EASE it off just enough to look behind it.

You usually can follow the Harddrive activity LED wires.
Harddrive activity LED is usually AWAY from the Power On switch, and Power On LED light.

There's two wires down.
Now look at where the Power On LED light is. Can you see wires going straight to it?
Two more wires down.

From process of elimination, you now know the last two wires going to the Front Panel, are for the Power On switch.

(The Power On switch, is part of the plastic Power On Button assembly. If you look close at the Power On Button assembly, you can see this)

THAT sir, is the MAIN thing.
I can guide you where the other cables go, as far as power cables, and Harddrive cables, and Optical Drive cables. (CD/DVD drive)

If you have already disconnected the Front Panel wires to Front Panel header on motherboard; you get to play a game(?)

Power Supply plugged into power, use a small flat tipped screwdriver, and touch two pins at a time.
When you get to the two Power On switch wire pins, the Power Supply will come on.

Now it is a process of elimination.
Use an LED with two wires, to find out what the rest of the pins are.
The rest of the contact pins in the Front Panel header.
Grab the HDD LED light, or Power On LED light.
You're getting a new computer case anyway.

Touch two pins, and the LED light blinks?
That's the HarDDrive activity LED light, pins.
LED stays on?
That's the Power On LED light, pins.

Either of those LED's are dim, (When the Harddrive is active, or when the computer is on), switch the wires around.
You have the Positive ( + ) wire mixed up with the Ground ( - ) wire.

Moving on.............
The 6 Blue SATA connectors on the motherboard:
If you look close you will see;
SATA0, SATA1, SATA2, SATA3, SATA4, and SATA5.
Or it may be,
SATA1, SATA2, SATA3, SATA4, SATA5, and SATA6.

The Harddrive plugs into SATA0 or SATA1.
Just depends on what the SATA connector numbering starts with.

The main optical drive, or a single optical drive; plugs into SATA1, or SATA2.
A secondary SATA optical drive will plug into SATA2 or SATA3.

(Look at the SATA numbering above, and you can compare side, by side )

HOWEVER, the beauty of SATA is; that you can plug whatever you want to, in ANY SATA connector on the motherboard; and BIOS will find it.

Plug the Harddrive into SATA 3? No problem.
Plug the optical drive into SATA 0? No problem.
BIOS will find the drive with the Operating System on it.
The Harddrive.
Then BIOS will know the other drive/s are optical drives.

(Make sure in the BIOS Setup utility, that the SATA connector on the motherboard you are using, is Enabled.
Otherwise BIOS will Not see the drive)

What cable from the Harddrive, and optical drive; plugs into those SATA connectors on the motherboard?
A SATA data cable,

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

Note the L-shaped opening in the SATA data cable connector.
Lines up with an L-shape on the motherboard connector.
One example of a SATA connector on the motherboard is shown.
This one is an Open design. Your SATA connectors on the motherboard, will be a Closed design.

Between a SATA data cable connector, and a SATA power cable connector, the SATA power cable connector is larger in width.
SATA data cable connector has 7-pins.
SATA power cable connector has 15-pins,

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

See the SATA harddrive example?
Note the L-shape is pointing DOWN. It is this way EVERY time.
Now you know which way to turn the SATA data cable's connector, when installing. 'Foot' of L-shape goes Down.

More in a Comment.

Mar 14, 2013 | Motherboards

1 Answer

Removing a Dell Dimension L600r Motherboard


Power unplugged from computer, and all cables;

1) Look at the back of the computer. ONE of the Side Panels remove.

There will be screws vertically along the edge of the Side Panel, that removes. Either Philips head screws you remove, or Thumbscrews that you just loosen.

Once screws are removed, or Thumbscrews loosened all the way, look for a bulged formation in the back of the Side Panel.
This is a fingerpull.

Pull back on the Side Panel. It may only pull back so far, then stop.
This is because the Side Panel has hooked tabs that protrude from it, and go into slots in the metal frame of the computer case.

The Side Panel is then slid forward a tiny bit, and removed straight out from the computer case. You have to get the hooked end of the tabs, to clear the slots in the metal frame.

STOP!
Now FOLLOW Anti-Static Precautions!

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 BEFORE reaching inside your computer, and/or before taking 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 frame 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.

I then lay the computer on a static free towel, on the table; and computer case opening -> UP.
Makes it SO much easier to work on.

2) Next remove all power cables going to the motherboard, and peripherals. (Harddrive, Optical drive/s, Card Reader, Floppy Drive, etc)

Flop, and/or tie the power cables out of the way, to the outside of the computer case.
If the Power Supply power cables are still in the way, remove the Power Supply.

Look around the outside edges of the motherboard, for motherboard mounting screws; and to the inside.
When removing the screws look to see if fiber washers are used.
Save these washers. The new motherboard may need them also.

(Rule of thumb is;
If the motherboard mounting holes have NO metal rings, fiber washers are used.
Metal rings? No fiber washers )

The motherboard is tilted up to remove. Tilted up on the OPPOSITE side of the I/O area side.

Input/Output area.
This is the area on the back of the computer, that the mouse, keyboard, monitor, audio cables, etc. is.
Components plugged in here plug directly TO the motherboard.

The metal shield that surrounds the I/O area, is the I/O Shield.
If installing a new motherboard, and it is not an original OEM motherboard replacement, use the I/O Shield that comes with the new motherboard.

That is; IF it comes with one; and IF it fits the rectangular hole in the metal framework; of the computer case.

Dell Support shows no documentation; and reviews are sparse.



WAIT, hold the phone!

http://www.ebay.com/itm/Broken-Dell-Dimension-L600R-MCM-Computer-Desktop-Parts-/140517075990

OH, I see now said the blind man!

The lever on the Top/Back is depressed, or pulled up on, or pulled back on. This releases the half side of the computer case; that removes.

Also;
The front of the computer is the Front Panel.

The area of contact pins on the motherboard, that the main wires from the Front panel go to, is the Front Panel header.

Power On switch, Power On LED light, HarDDrive activity LED light, and Restart switch; IF used.

BEFORE you do ANYTHING, make notes, and a drawing as to what pins on the motherboard; that those wires go to.
I DO NOT have a pinout chart available for the Front Panel header.

Power cables from Power Supply I can guide you on.

For additional questions, (And I expect many), please post in a Comment.
Regards,
joecoolvette

Happy New Year to you, and yours!

Dec 29, 2012 | Dell (E210882) Motherboard

1 Answer

DX4822-01 will not power up


Time to diagnose Mike.

See if the problem is a Power On switch, or the Power Supply.

The procedure is to use a jumper wire, on the 24-pin ATX main power cable's connector.

Photo of motherboard,

http://www.skyline-eng.com/index.cfm?fuseaction=product.display&Product_ID=7982

Click on the image of the motherboard to enlarge.
Look at the top/middle edge, and between it, and the ram memory slots.
There is an opaque white connector with 24 socket holes.

This is a general example of a 24-pin ATX main power cable, and it's respective connector on the motherboard,

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

Look at the photo to the Right. Power cable plugged into motherboard. See the Green wire?
That is the Soft Power On wire. Abbreviated as PS_ON.

You are going to briefly jump it to ANY Black wire.
ALL Black wires are Ground wires.

Does not involve cutting on any wire's insulation.
A straightened out paperclip bent into a U-shape, is the jumper wire.

The top is wrapped a few times with black plastic electrical tape.
This taped area is for your fingers to hold onto.
Turn the U upside down, and the 'legs' are what is used.

Power Supply plugged into power, power cable plugged into motherboard;
Where the wires go down into the power cable's connector, is the BACK of the connector.

One leg of the U-shaped jumper wire goes down into a socket hole, with the Green wire. Goes down into the Back of the connector, and right next to the insulation of the Green wire.

Has to past the insulation of the wire, and MUST touch a metal terminal that is connected to the end of the wire.
(About 3/8ths of an Inch)

[Every wire going down into that power cable, ends in a metal female terminal that resembles this example,

http://www.molex.com/molex/products/datasheet.jsp?part=active/0002081202_CRIMP_TERMINALS.xml&channel=Products&Lang=en-US

Looking at the photo in the middle of the Playtool link, you can barely make out the tip openings of these female metal terminals. Look like to be brass ]

The other leg of the U-shaped jumper wire goes down into ANY, socket hole that has a Black wire in it.

The contact time is to be no more than 2 seconds.
The Power On switch is a Momentary Contact Switch.

Power used in the Soft Power On circuit is 5 Volts DC.
In comparison two D cell flashlight batteries store 3 Volts DC.

There MAY be a spark. Advising you ahead of time.
You may wish to use a glove on the hand that holds the jumper wire.

IF, the Power Supply comes on you have a bad Power On switch.
IF, the Power Supply does Not come on you have a bad Power Supply.

You can lay the computer on it's side, opening of computer case up, so that it is easier to work on.

You SHOULD follow Anti-Static Precautions, once you have opened the computer case.

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 before working on your computer.

Computer on a table, computer case open, TOUCH an unpainted surface of the metal frame, 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.

Also clean out the inside of the computer. Use a can, or two of compressed air for computers. (Computer UNPLUGGED from power)

The Power On Button is an assembly. The Power On switch is a separate unit, and contained within the Power On Button assembly.
MOST of the time this ATX power on switch is used,

http://www.directron.com/atxswitch.html

The plastic of the Power On Button assembly is probably pretty brittle. Heat and age over time has made it so.
I use two methods to soften the plastic enough, so that tabs do not break when trying to remove/replace the Power On switch;

1) The Power On switch has been deemed to be bad. No need to worry about it's condition now, it's going in the trash.
So I fill a bowl with as hot a water as I can stand, and dip the Power On Button assembly in it, holding onto the wires.

Plastic softens then begin.

2) Use a hair dryer, and constantly keep the nozzle moving back, and forth across the Power On Button assembly.


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

Oct 27, 2012 | Gateway DX4822-01 Power Supply 575 Watt...

1 Answer

I am looking forthewireing for a hp pavilion xt919


A) Power cables from Power Supply to motherboard:

1) Product information > Product specifications > HP Pavilion XT919 Desktop PC Product Specifications and What Ships in the Box,

http://h10025.www1.hp.com/ewfrf/wc/document?docname=bph06613&tmp_task=prodinfoCategory&cc=us&dlc=en&lc=en&product=58461

2) According to my sources the motherboard is an Asus CUW-AM,

http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?lang=en&cc=us&taskId=120&prodSeriesId=46171&prodTypeId=12454&prodSeriesId=46171&objectID=bph07170

If this indeed holds to be true, scroll the page down, look at the illustration under the Figure 1: Motherboard layout, heading.
Look at number 22 on the right; ATXPWR

Now scroll down to the motherboard photo.
The white connector with two columns of 10 socket holes, to the right of the black Ram memory slots, is ATXPWR.

Proper name is 20-pin ATX main power cable connector, on the motherboard. This is an example of a 20-pin ATX main power cable, and it's respective motherboard connector,

http://www.playtool.com/pages/psuconnectors/connectors.html#atxmain20

Note in the three photos the Lock on the side of the power cable connector, and the Tab on the side of the motherboard connector.
The Lock operates like a see-saw on a playground.

To remove the power cable the top is squeezed in, and this causes the hooked end of the Lock to come away from the Tab.
When the 20-pin ATX main power cable is deemed to be properly installed tightly to the motherboard, the hooked end of the Lock will be over the Tab.

B) IDE (PATA) harddrive uses a 4-pin standard Peripheral power cable.
So does the Optical Drive/s,

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

Note the rounded corners when plugging it in.
{Power cable has been misnomered as a 'Molex' power cable. Molex came up with the connector design. The name stuck. Kind of like calling an adjustable open-end wrench a Crescent wrench }

C) Floppy drives and card readers use a 4-pin small Peripheral power cable,

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

D) Number 6 -> SYS_FAN, is where the Processor fan plugs in.
SYS_FAN stands for System Fan. A computer case fan. The illustration is wrong.

E) Number 21 is PS_FAN.
That to me stands for Power Supply Fan. Another misnomer. The Power Supply has it's own fan, and doesn't need power from the motherboard for it.
I'll bet this is where a System Fan, or computer case fan, would connect.

F) Number 29 points to the Primary IDE connector on the motherboard.
This is where the 40-pin IDE flat ribbon cable, plugs in for the Harddrive.

Number 24, Secondary IDE, is where the Optical Drive's, IDE flat ribbon cable plugs in.

Note*
The rectangular connectors for the IDE flat ribbon cables, has a 'bump', or protrusion, on the outside edge towards the middle,

http://en.wikipedia.org/wiki/File:PATA-cable.jpg

In this photo it is at the top/middle. There are different styles. Square block, or the two piece design shown.
These bumps, or protrusions line up with a cutout.

A cutout on the motherboard connector, or a cutout on the circuit boards for the harddrive, and optical drive.

IF there is no bump, or protrusion;
There is a faint red strip on one side of the IDE (PATA) flat ribbon cable.

The red strip denotes which side Number 1 wire is on. Number 1 wire in the cable, for number 1 pin in it's connector/s.

http://pinouts.ru/DiskCables/IDE_pinout.shtml

Here you can see by the pinout above, that for the black Primary IDE connector, and the blue Secondary IDE connector, Number 1 pin is at the Top.
Red stripe on edge of IDE cable will be at the top, when the cable is attached.

When plugging into a harddrive, or optical drive, Number 1 pin ALWAYS goes toward the power cable.
Towards the 4-pin standard Peripheral power cable.
Red stripe will be towards 4-pin standard Peripheral power cable.

H) Number 14 CD_IN is where the audio cable from the MAIN optical drive plugs into. If you have two optical drives only the main, or Primary optical drive audio cable plugs into the motherboard.

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

Under the photo of the motherboard, the pinout for the Front Panel header is shown, though not very legible.
In the illustration the Front Panel header is Number 30 - Panel.

Looking at the pinout, and looking at the actual Front Panel header on the motherboard photo, it looks as though they have the pinout upside down, in relation to how it actually is.

Note in the motherboard photo, the Front Panel header is shown with 5 pins across the Top, then a space, then 4 more pins.
The Bottom row is 10 pins in a row.

In the Front Panel header pinout, they show 10 pins going across the Top. 4 pins going across the bottom, a space, then 5 pins.

Upside down.

I think it should be this way,

Top Row starting on the Left side going towards the Right;
Pins 2, 4, 6, 8, 10, No Pin, 14, 16, 18, and 20.

Bottom Row starting on the Left side going towards the Right;
Pins 1, 3, 5, 7, 9, 11, 13, 15, 17, and 19.

1) Pins 2 and 4 are for a Reset switch, IF a Reset switch is used.

2) Pins 6, 8, and 10 are for the Power On LED. (Light)
This is for a computer that has 'Turbo'
Dual light Power On LED. May have Green and Yellow lights.

Green for 'Turbo', and Yellow for Normal.
Bunch of hooey, really.

'Turbo' mode is the computer operating in a normal mode, and Normal mode really is the computer slowed down.

Pin 10 is for the Negative ( - ) wire.
Pin 6 and Pin 8 are the Positive ( + ) wires. One for the Green side of the Power On LED, one for the Yellow side of the Power On LED.

3) No Pin 12

4) Pins 14, and 16 are for the HarDDrive activity LED. (Light)
Pin 14 for the Positive ( + ) wire.
If the HDD LED is dim when the Harddrive is active, switch the wires around.

5) Pins 18 and 20 are for the Power On switch.

6) Pins 1, 3, 5 and 7 are for an internal speaker. Used to hear BIOS Beep Codes.
Pin 3 is for the Negative wire ( - ), and Pin 7 is for the Positive ( + ) wire.

7) Pins 9 and 11 N/C. Not Connected. (External SMI lead)

8) Pins 13 and 15 are for a Keylock switch.
Some computers have a Keylock. Unlocked the computer will come on.
I -> believe, Not connecting anything to these two pins, is like having the Keylock in the unlocked position.
May be wrong. May have to have a jumper wire across these two pins for the computer to work.

9) Pins 17 and 19 are for a Message LED
(Sleep/Standby)

HOWEVER, the best method IMHO is to use an LED light, and touch two pins at a time, to see which ones are for the Power On switch.
When the computer comes on, (Power Supply), then you know which pins are for the Power On switch.

Computer running, do not touch those two pins again, and check the rest of the pins.
Computer turns off, and starts again? Restart switch
LED light blinks? Harddrive activity LED
LED light stays on steady? Power On LED.

Finding which two pins are for the Power On switch, also helps tell you where the rest of the pins are, by looking at the pinout on the HP Support page.

http://h10025.www1.hp.com/ewfrf/wc/document?lc=en&cc=us&docname=bph05159

Scroll down to Figure 4: Front panel connectors
Same Front Panel header used for this TriGem (Cognac) motherboard.
Clearer though.

For additional questions please post in a Comment.

Regards,
joecoolvette

Oct 02, 2012 | HP Motherboards

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 Motherboards

1 Answer

Is there a schematic somewhere that shows how to plug these things in? I may be short a cord Thanks! Jack


First thing to plug in are the Power Supply cables.

The main one to start with is the ATX main power cable.
There are two main variations of the ATX main power cable.

The 20-pin ATX main power cable,

http://www.playtool.com/pages/psuconnectors/connectors.html#atxmain20

,and the 24-pin ATX main power cable,

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

The 20-pin version was used on the older model computers. It was found that more power was needed to the motherboard due to newer computer components, and four extra power wires were added.

In the center photo note the lock on the side of the connector. It operates in a see-saw fashion. The top is squeezed in, to release the hook of the lock from a tab on the female connector, on the motherboard. Then the male connector can be removed from the connector on the motherboard.

Depending on the motherboard you may also have a 4-pin ATX +12 volt power cable. This is additional power to the motherboard, and is mostly used to provide additional power to a Processor.

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

Note the lock on the side of the connector. It operates in the same fashion as the ATX main power cable's connector.

Peripheral devices inside the computer also require a power cable.
If you have an IDE, (Also known as PATA), harddrive it will require a 4-pin standard Peripheral power cable.
Commonly misnomered as a Molex power cable,

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

This power cable is also used on IDE type optical drives. CD or DVD.
It can also be used along with an adapter cable to power a computer case fan.
There is no lock, but there is only one direction the cable will plug in.
There are two rounded corners on one side of the plug to line it up.

On all power cables use the connector itself to unplug the cable, Not the wires!

(Sometimes unplugging a 4-pin standard Peripheral power cable is tough.
The connector is rocked side to side while removing.
Sometimes an additional tool is needed to EASE the connector out.
In all cases make sure the computer is unplugged from power BEFORE working on it, and assure that you are following Anti-Static Precautions)

You may have a SATA harddrive, and also you may have SATA optical drives. (CD or DVD drive)
They use a SATA power cable.
The SATA power cable has 15 pins.

[Note a SATA data cable has 7 pins. It is the shorter of the two cable connectors]

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

NOTE*
IF you have a SATA harddrive that has provisions on the back of the unit, to plug BOTH a SATA power cable, and a standard 4-pin Peripheral power cable, ONLY use the SATA power cable!

Using both power cables will burn out the harddrive.
Sometimes it doesn't happen right away, but it eventually will.

The last power cable I will mention here is the 4-pin small Peripheral power cable.
On older computers this power cable was used on a Floppy Drive.
Now more used to provide power for a Card Reader.

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

Additional information to be included in a Comment.
Regards,
joecoolvette

May 29, 2011 | Motherboards

1 Answer

Not booting


I think it could be one of two things either on off switch is bad or
useing to light of a power source try a 450watt power conductor.
24/4 connector and try replaceing power switch .lala linda

May 31, 2008 | Intel D845GVSR Motherboard

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