Wiring atx box - Antec Computers & Internet

How PC Fans Work - PCB Heaven

pcbheaven.com/wikipages/How_PC_Fans_Work/

Mar 29, 2010 - The connector of a 2-wire fan has a red and a black cable. ... The firsttwo wires are the power supply of the fan. ... This fan is designed to be controlled with a PWM signal and .... I have a four-wire (red black yellow blue) 12v fan out of an old .... My case has a number of 2 pin outputs for multiple case fans, ...

Motherboard Power Connectors ' PC Repair and ... - InformIT

www.informit.com > Articles > Hardware

InformITFeb 28, 2003 - Table 3.3 ATX Main Power Supply Connector Pinout (Wire Side View) .... The auxiliary connector has no +12v leads at all, so that is no help. Pulling up to ...Pin. Signal. Color. Yellow. +12V. 3. 1. Gnd. Black. Yellow. +12V. 4. 2.

ATX 24 pin power supply connector pinout diagram ...

pinouts.ru/Power/atx_v2_pinout.shtml

Rating: 52/60 - ‎60 votes
Jan 28, 2014 - Pinout of ATX (ATX12V) 24 pin power supply connector and layout of ... and later (ATX12V 2) is common ATX standard, 24 pin connector. ... Power Ok is a status signal generated by the power supply to notify ... 10, 12V, Yellow, +12 VDC ... 18 AWG is recommended for all wires except pin 11, which should ...

ATX power supply connector pinout diagram @ pino

Check to see if the problem is the Power On switch, or the Power Supply.
Bypass the Power On switch.

http://www.supermicro.com/products/motherboard/Xeon/GC-LE/P4DL6.cfm

[For the motherboard user manual;
Go to the heading, to the upper right in blue - Links and Resources.
{Don't believe we can use the Ampersand on here. Let's try & }

In the list below it click on - Motherboard Manual
Click on the blue - [ Download ] for the second file listed.
MNL - 0660 (English)
P4DL6 / P4DLR / P4DLR+ ]


The SuperMicro P4DL6 motherboard can use a 20-pin ATX main power cable, OR a 24-pin ATX main power cable.

Suggest you use a Power Supply, that has a 24-pin ATX main power cable.
Why?
A 20-pin ATX main power cable, does NOT provide enough power to the motherboard.

General example of a 20-pin ATX main power cable, and it's respective connector on the motherboard,

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

[NOTE*
Color of the connectors does NOT matter ]

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

Note the additional power wires.
3.3 Volts (Orange), 5 Volts (Red) { 2 of them }, and a Ground wire. (Black)

Which type of ATX main power cable are you using? Don't know. You haven't stated it.

For both,....look at the Green wire. This is the Soft Power On wire.
(Abbreviated as PS_ON)
A jumper wire is used to jump from the Green wire, to ANY Black wire.
ALL Black wires are Ground wires.

Go to the link with the 24-pin ATX main power cable, in it.
Look at the photo to the far right. See the Green wire?
See all the Black wires?

The preferred jumper wire is a paper clip, straightened out, then bent into a U-shape. The middle of the U is wrapped a few times, with black plastic electrical tape. This taped area is for your fingers, and thumb to hold onto.

Turn the U over. Taped middle is up. There are now two 'legs'.
These legs go down into the socket holes, of the Green wire, and ANY Black wire.

One 'leg' down into the socket hole of the Green wire, the other 'leg' down into a socket hole with ANY Black wire.
The 'leg' of the jumper wire, goes down RIGHT NEXT TO the wire already in the socket hole.

The 'leg' has to go down into the socket hole, (Next to the wire already in the socket hole), pretty far.
It has to go past the insulation of the wire, and touch a metal terminal, that is on the end of the wire.

Look at the middle photo. Here you can see the metal terminals, in the socket holes.

Again, Power Supply plugged into power. ATX main power cable plugged into the motherboard, just like the photo to the far right.
The jumper wire makes a contact of no more than 2 seconds.

(Stick the jumper wire down in the socket holes, no more than 2 seconds, then pull it out.
The ATX power on switch is a Momentary Contact Switch )

Power supply comes on? You have a bad Power On switch,

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

Power supply does NOT come on? You have a bad Power Supply.

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

Your computer, Dell Dimension E521 Desktop PC, will not turn on, and someone told you the problem is the motherboard?

Unless you stated to this entity, that you spotted leaking Electrolytic Capacitors on the motherboard, how can they assume this?

I believe you should check whether the problem is the Power On switch, or the Power Supply.

1) The Power On switch is located inside the plastic Power On button. It is an ATX power on switch. (The Power On switch is a Momentary Contact Switch )

This is an example of an ATX power on switch, that I have found fits many desktop computers,

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

The test to perform bypasses the Power On switch. It does NOT involve the Power On switch itself, however.

Bypassing the Power On switch turns the computer (Power Supply) on?
Problem is the Power On switch.

Bypassing the Power On switch does NOT turn the computer (Power Supply) on?
The problem is the Power Supply.

A) Computer on a table, computer unplugged from power, computer case open.
I would then lay the computer on it's side, on a towel, on the table, computer case opening UP.
Watch the cables attached to the computer.

This is so you can access the components inside of the computer more easily. This will become apparent in a moment.
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 the computer.

(Have to restate) 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.

Should you leave your computer in the middle of working on it, (For ANY reason), be SURE to touch the metal frame again upon your return.

Now you are safe, and the computer is safe. Let's begin;

Inside your computer there is a power cable coming from the Power Supply, that plugs into the motherboard. This power cable I'm referring to is the 24-pin ATX main power cable.

This is an 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

Female connector on motherboard shown in the Left photo.
Power cable connector shown in the middle photo.

The photo to the right shows the ATX main power cable plugged into the motherboard.
This is how it needs to be for the test. It also shows the color of the various wires going into it.
We only need to be concerned with Two wires.

The Green wire, and ANY Black wire.

The Green wire is the Soft Power On wire. It is also abbreviated as PS_ON.
ANY Black wire you see is a Ground wire.

A jumper wire is used to BRIEFLY connect the Green wire, to ANY Black wire.
(Again, the Power On switch is a Momentary Contact Switch)

The jumper wire preferred to use is a paper clip. The paper clip is straightened out, then bent into a U-shape.
Look at the U-shape upside down. The top/middle is wrapped a few times with black plastic electrical tape. This is for your fingers, and thumb to hold onto.

The 'legs' of the U-shape go down into the Back of the ATX main power cable's connector.
(I shortened 24-pin ATX main power cable to ATX main power cable)

Look at the photo to the right. See how the Green wire goes down into a squarish socket hole?
Look at the photo in the middle. See the metal tube shapes at the Front of the connector?
Brass looking, slightly square?

These are metal terminals. There is a metal terminal for every wire, going down into the ATX main power cable connector.

The 'leg' of the U-shape jumper wire goes down into the Back of the connector (ATX main power cable connector), RIGHT NEXT TO the existing wire that is in the socket hole.

It has to go down into the squarish socket hole far enough, to pass by the insulation of the wire, and Touch the metal terminal.

Example:
One leg of the U-shape goes down into the socket hole of the Green wire, right next to the Green wire, and touches the metal terminal.

The other leg of the U-shape goes down into a socket hole, with ANY Black wire, and touches the metal terminal pin.

The leg MUST touch the metal terminal pin.

The contact made is brief. No more than 2 seconds. (1001,..1002)

Shock warning. None.
The Soft Power On wire (Green wire) has 5 Volts DC going through it.
In comparison two D cell flashlight batteries produce 3 Volts DC.

HOWEVER, there may be a spark, as both legs of the U-shape jumper wire touch their respective metal terminals. Warning you in advance.

You are also holding onto the black plastic electrical tape. (One wrap of black plastic electrical tape will insulate you from 600 Volts DC)

IF, the jumper wire turns the computer on, (Power Supply actually), the problem is a bad Power On switch.

IF, the jumper wire does Not turn the computer on, the problem is a bad Power Supply.

The Power Supply used in a Dell Dimension E521 Desktop PC, is an ATX (Form Factor) power supply.

The form factor ATX for a Power Supply refers to the size, and shape of the Power Supply's case, and the power cables provided with the Power Supply.

The size, and shape of the ATX power supply case is approximately 6 inches Wide (Width), 5-1/2 inches Long (Length), and 3-1/2 inches Tall. (Height)

With the power cables offered with today's offering of ATX power supply's, there is no need to be concerned if the ATX power supply in question, has the needed power cables.

ATX power supply's sold now, have the correct power cables you'll need, and the correct amount of power cables.

This is just one example of an ATX power supply that will work,

http://www.tigerdirect.com/applications/SearchTools/item-details.asp?EdpNo=1389575&CatId=1078

Scroll down to the bold heading - Detailed Features
Look at the chart under the subheading - Connectors

Note the first connector shown. This is a 20-pin plus a 4-pin main power cable.
Both power cables are used for your 24-pin ATX main power cable connector, on your motherboard.

This gives a little more information on a 20 + 4-pin ATX main power cable,

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

Note the photo to the right. This particular motherboard has a 20-pin ATX main power cable connector. It does not require the additional 4-pin power cable.
Yours does.

Do Not confuse the 4-pin ATX +12 Volt power cable, with the 4-pin power cable that comes with a 20 + 4-pin ATX main power cable.

The 4-pin power cable you need is in the harness of wires, for the 20 + 4-pin ATX main power cable.

There WILL be a 4-pin ATX +12 Volt power cable, however. This is an example of a 4-pin ATX +12 Volt power cable,

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

(Color of the connectors for any power cable, does Not matter. They can be any color)

Dell Support > Dimension E521 Desktop PC > Service Manual,

http://support.dell.com/support/edocs/systems/dime521/en/SM_EN/index.htm

In the list click on - Technical Overview
Now click on - System Board Components

22 is where the 24-pin ATX main power cable plugs in.

(NOTE*
The 24-pin ATX main power cable connector, and the 4-pin ATX +12 Volt power cable connector, have a Lock on the side. The plastic rectangle on the side of the connector/s.
This Lock has a hook on the bottom end. The end that faces the motherboard.
The hook goes over a Tab on the female connector, on the motherboard.

The Lock acts like a see-saw on a playground. The top of the Lock is squeezed in. This action brings the hooked end away, from the Tab on the motherboard female connector.
Then the power cable CONNECTOR is wiggled, and removed from the female motherboard connector.

{ ONLY use the Connector when removing it. DO NOT pull on the wires)

2 points to where the 4-pin ATX +12 Volt power cable plugs in.
That's it for the Power Supply power cables.

1 points to where the Processor Fan plugs into.
5 and 6, point to where the Data cables from the SATA harddrive, and SATA optical drives, plug into.
(This is if the Dimension E521 has SATA optical drives, and not IDE { PATA} optical drives)

[ The SATA data cable connector has 7 contact pins in it. It is the shorter connector.
The SATA power cable has 15 pins in it. It is the longer connector.

IF, the SATA harddrive has a provision for using a SATA power cable, AND a 4-pin Peripheral power cable (Mislabeled as Molex), ONLY use just the SATA power cable. Otherwise the SATA harddrive will burn out. Sometimes not right away, but eventually it does ]

Going back to the main page for the Service Manual, click on -
Removing and Installing Parts.

Removing the Computer Cover is listed, as well as Power Supply.

For additional questions please post in a Comment.

Regards,
joecoolvette

Pins 16 and 17 for a 24-pin ATX main power cable connector, and Pins 14 and 15 for a 20-pin ATX main power cable connector.

1) 24-pin ATX main power cable and it's respective connector,

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


2) 20-pin ATX main power cable and it's respective connector,

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

Just remember; The Green wire is the Soft Power On wire, (PS_ON)

ANY Black wire is a Ground wire.

A jumper wire is used briefly to touch the green wire to ANY black wire.

The preferred jumper wire is a paper clip because of it's size. (Diameter)

The jumper wire goes down into the BACK of the connector, RIGHT NEXT TO THE EXISTING WIRE that is already in there.

The BACK of the connector is where the wires go in. (In the links above look at the photo to the far right)

The 24-pin, or 20-pin ATX main power cable, is plugged into the motherboard.
The Power Supply is plugged into power.

The jumper wire goes down into the socket hole, right next to the existing wire, and far down in the socket hole.
It has to touch a metal terminal that is in the FRONT of the connector.
Each wire going into that connector has a metal terminal at the end of it.

Black plastic electrical tape is wound around the middle of the U shaped paper clip.

Use the jumper wire and the Power Supply comes on?
You have a bad Power On switch.

Power Supply does Not come on?
You have a bad Power Supply

I'll assume that your old PSU is also an ATX. First, the plug that has a few dozen wires arranged in a rectangle goes into the MB. Your PSU's ATX connector may be split into 2 parts: the AT portion and a square portion with 4 wires. Together, they make an ATX plug. You'll find some tiny plugs with 2-3 wires for your onboard fans. You might find a few slightly larger flat plugs with 4 wires for old floppy drives. The rest should be the regular MOLEX plugs and slim SATA power plugs for your drives.

1) Dell power supply is unique , you can never replace with another regular ATX power supply
2) Please get 2nd handed Dell power supply from the same model. try ebay

Yes, it's called bypassing the Power On switch. Has nothing to do with the switch itself, or it's wires.

You use a jumper wire on the 20 or 24-pin ATX main power cable's connector.
Touch the jumper wire from the Green wire (Soft Power On) to ANY Black wire. (Ground)
(Soft Power On is abbreviated as PS_ON)

If the Power Supply comes on, the problem is the Power On switch.
If the Power Supply does Not come on, the problem is the Power Supply.

1) 20-pin ATX main power cable,

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

2) 24-pin ATX main power cable,

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

Look at the photos of the ATX main power cable plugged into the motherboard.
Where the wires go down into the connector is the Back of the connector.

This is where the jumper wire goes down into.

The jumper wire goes down into the socket hole, in the Back of the connector, RIGHT NEXT to the wire IN the socket hole.
The jumper wire has to go pretty far down in the socket hole.

[ATX power cable plugged into the motherboard, Power Supply plugged into power ]

At the end of every wire in the ATX main power cable's connector, is a metal terminal.

A Female Molex Crimp Terminal connector,

http://www.alibaba.com/product-gs/336134982/molex_female_crimp_terminal_connector/showimage.html

[You can click on the Zoom In icon { + } at the top to enlarge the view]

The jumper wire Must touch that metal terminal.
The jumper wire is made from a straightened out paper clip, bent into a U shape.
The middle of the U is wrapped a few times with Black plastic electrical tape.
This where your fingers hold onto the jumper wire.

(One wrap of Black plastic electrical tape is good for 600 Volts DC)

One 'leg' of the U shaped jumper wire goes down into the socket hole with a Green wire.
The other 'leg' of the U shaped jumper wire goes down into ANY socket hole with a Black wire.
(ALL Black wires are Ground wires)

The contact period made is no longer than 2 seconds.

The Voltage is 5 Volts DC.
Two flashlight batteries produce 3 Volts DC.

This is one generic ATX power on switch that I have found fits many computers,

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

NOTE*

WATCH IT when buying an aftermarket Power Supply for your computer, if it needs one.
For a time period Dell was strictly a Proprietary computer manufacturer.
Dell wanted THEIR parts used in THEIR computers only.

They had the motherboard manufacturer switch the pins around in the ATX main power cable connector, on the motherboard.
They also had the Power Supply manufacturer switch the power cables around in the Power Supply.

This means if you plug an ATX main power cable, from an aftermarket Power Supply, into one of these proprietary Dell motherboards, you WILL fry out the motherboard!

Can also fry out the Processor, Ram Memory, and Harddrive. (Plus a graphics card if you have one installed)

CHECK the color code of the aftermarket Power Supply's ATX main power cable, to the color code of the Dell power supply.

See that the color code of the wires matches the socket holes in the connector.

Have further questions regarding this, post in a Comment.

Regards,
joecoolvette

Bad Power Supply. Weak voltage power rail.

[There are three main voltages produced by the Dimension 4550's Power Supply.
1) 3.3 Volts
2) 5 Volts
3) 12 Volts ]

The Power On button LED functions as a diagnostic light also.

Dell Support > Dimension 4550 > Service Manual,

http://support.dell.com/support/edocs/systems/dim4550/

Left-click on Solving Problems, then click on Power Problems

The Power Supply is just an ATX form factor version. The common Power Supply form factor used in MANY desktop computers.
(ATX form factor for a Power Supply refers to the size, and shape of the Power Supply's case.
Approximately 6 inches Wide, 5.5 inches Long, and 3-1/2 inches Tall)

HOWEVER, (Not shouting), there is an area of concern, should you try a Power Supply you may have available for a test, or purchase one.

It involves the wiring of the 20-pin ATX main power cable. More specifically the power cable's connector.

To explain view the standard wiring, set for a 20-pin ATX main power cable's connector,

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

Looking at the photo to the far right, observe the color code of the wires, going down into the socket holes of the connector.

Look at the Lock tab on the side of the connector. This will help you orient the color code of the wires, and their placement in the socket holes, to the chart below the photos.

The connector on the end of the 20-pin ATX main power cable, is a Male connector.
Where the wires go into the connector, is the Back of the connector.
In the middle photo you can see the Front of the connector.

The wires going down into the ATX main power cable's connector, end in a female metal terminal.
The connector on the motherboard, (Shown in the photo to the Left), has Pins.
The metal female terminals go over the Pins.

The pins are numbered. The color code of the wires match up to the pins.
This is shown in the chart.

Now look at Dell Support > Dimension 4550 > Technical Overview > DC Power Connectors >
DC Power Connector P1

http://support.dell.com/support/edocs/systems/dim4550/techov.htm#1101897

The illustration may not be accurate. You'll have to compare since you have the computer, and Power Supply in front of you.

For a time period Dell was a Proprietary manufacturer.
Meaning they wanted THEIR parts used on THEIR computers, and ONLY THEIR parts.
They had the motherboard manufacturers make motherboards according to their specs.

One of the specifications was that the pins would be CHANGED around, in the motherboard connector for the ATX main power cable.

They also had Power Supply manufacturers make the ATX power cable to their specifications.

This means if a user bought an aftermarket Power Supply, the color code of the wires in the ATX main power cable would Not match.

Many users did buy an aftermarket Power Supply, and installed it.
Burnt motherboards, fried Processors, and graphics cards, resulted.

Orange wires are 3.3 Volts
Red wires are 5 Volts
Yellow wires are 12 Volts.
Black wires are Ground wires.

Guess what happens when you plug a 12 Volt wire into where a 3.3 Volt, or 5 Volt, or Ground wire is supposed to Be?
POOF!

My suggestion would be to look for a Power Supply that is an ATX form factor, is KNOWN to be good, and is compatible, for a test unit.
You, or someone you know may have upgraded to a better computer, and you may be able to borrow the Power Supply for a test unit.

Compatible:
Has the Correct power cables.
1) 20-pin ATX main power cable, OR a 20/24-pin ATX main power cable.
(20-pin connector that has an additional connector with 4 pins. Just use the 20-pin)

2) 4-pin ATX +12 Volt power cable. (Also referred to as P4 MB, and P4 ATX 12V)

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

(Power for the Processor)

3) Enough standard 4-pin Peripheral power cables.
(Misnomered as Molex)

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

(Power for the IDE Harddrive, and Optical drive/s)

Also:
You can change the power wires around in the ATX main power cable's connector.
Change them around, in an aftermarket Power Supply's ATX main power cable's connector.

Want to know how post in a Comment.

It was the 1996 to 2000 time frame, that Dell was proprietary with the 20-pin ATX main power cable, and the matching connector on the mobo. (MOtherBOard).

Standard 20-pin ATX main power cable, and it's corresponding connector should work, then add the 4 power wires that are missing, in a separate connector.

To expound:

View this standard 20-pin ATX main power cable, and it's respective connector,

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

The power wires should be in the same place as your P3 units.

(Match the color codes.
Use the lock tab on the 20-pin ATX main power cable connector, to base where the pins are.

Pins 1 though 20. Match the color code of the wires to the pins, and use the chart to compare)

Here is a view of a standard 24-pin ATX main power cable, and it's respective connector, so you can see what power wires are missing, from the 20-pin ATX main power cable connector, that are present in the 24-pin ATX main power cable connector.

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

Note the missing power wires, and what pins they line up with.

The P4, or also stated as the 4-pin ATX +12 Volt power cable, uses two Yellow (12 Volt) wires, and two Black wires, (Ground)

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

Since you don't have the male connector, be sure to orient in your mind where the Yellow (12 Volt) wires go, and the Black (Ground) wires go, by looking at the lock tab on the side of the female connector, on the motherboard, and comparing it to the photo.

Transfer this info, to the P4 connector you are going to make.

Where to get the power wires you need? Connect to any extra 4-pin Peripheral power cable wires, or splice off of ones that are in use, is one suggestion.

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

The links given are near the middle of the page. Scroll back to the top. Left-click on any power cable connector, that you wish more information on.

More info,

http://en.wikipedia.org/wiki/Computer_power_supply

Scroll to the bottom of the page, and look at the chart under the heading -

24-pin ATX12V 2.x power supply connector
(20-pin omits the last four: 11, 12, 23, and 24)

One more link,

http://www.smpspowersupply.com/connectors-pinouts.html

Lastly Dell Support > Optiplex GX260 > Service Manual,

http://support.dell.com/support/edocs/systems/opgx260/en/sm/index.htm

Just in case it's of any use.

Have questions regarding what I have stated, or need more clarification of anything I have stated, simply post in a Comment.

short the color green and black of your atx... use a metal wire.. don't wory it won't harm you... just unplug all the connection that is connected from you ATX.... short the said wire then plug your ATX to the outlet.. if fan is running then there's no problem on your ATX.. if not then you need to replace a new one...