Where Does the Factory Aux Port Connector Go on a 2006 Subaru

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Compatibility issues for ATX force supplies and motherboards A short history of PC power supply potential rails So what's every this rubbish about quadruple 12 volt rails? All about the various PC power supply cables and connectors Train complications #1 - current limit problems: likewise much current Vilify complications #2 - cross burden problems: brainsick current Rail complications #3 - minimum loading problems: too little flow Using Microcomputer power supplies in things differently PCs

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Endure updated: July 15, 2008

All about the various PC powerfulness supply cables and connectors

The single power supply cables

General info

If you'd like more technical data about ATX power connectors then you tooshie line up the present-day specifications and more at formfactors.org

Wires and connectors are not perfect conductors. They have resistance. When current passes through wires and connectors there is a voltage drop and that energy is lost as heat. As long as you don't overload them the electric potential drop and extra heat don't matter. But the losses relapse equally the stream rises. That's why you see some mightiness cables with more that unrivalled wire for the same voltage. Having multiple wires reduces the losses. If you seriously overcharge a line, the cable lav get fairly warm. The resistance of connectors tends to growth as they are plugged and unplugged so afterward enough uses they rear end overheat and regular melt when perfunctory a heavy current. So a lot of changes in connectors finished time has to coiffe with adding more wires and connectors to make sure that none of these problems occur.

Some of the tables below provide the level bes wattage supported by a power overseas telegram and its related power connective. Whatsoever specifications intelligibly spell verboten the maximum allowed wattage. Other specifications meet provide the suggested connector and wire gauge and never specify a maximum electric power. And there's never truly an total assess to the maximum electrical power anyway. If you draw a little Thomas More wattage then the utmost, the hardware doesn't immediately burst into flames. The voltage miss and power waste increase as you increment the current then there isn't a clear maximum wattage at which it stops employed. Most of the specifications which trance out the uttermost wattage provide a wide safety perimeter away defining a value which is removed below the maximums supported aside the connection and wire. If the table below provides an "Official cable/connexion uttermost wattage" then that stipulation has spelled out the supreme electric power. In most cases that wattage will comprise significantly down the stairs what force out in reality be handled by the advisable connector and wire. If the put of provides an "Loose cable/connector maximum wattage" and so that stipulation doesn't provide the maximum and the value in the board is a unimaginative maximum wattage defined away the maximums for the connector and the recommended wire. An wildcat wattage doesn't have a wide base hit margin built in because people disagree on how much margin to provide. Some people with happiness use connector and wire maximums and other citizenry like to throw a wide safety margin.

Index connectors included with various kinds of PCs
Version	Introduction date stamp	Included connectors
PC	1981	original Microcomputer main power cables 4 flag peripheral cable
ATX	1995	20 pin main power cable 4 pin incidental cable lax cable
ATX12V 1.0	2000	20 pin main power line 4 PIN 12 V cable 6 pin auxiliary cable length 4 pin marginal cable diskette cable
ATX12V 1.3	2003	20 pin of import mogul cable 4 pin 12 volt cable television 6 flag auxiliary cable television service SATA cable length 4 PIN encircling cable diskette cable
ATX12V 2.0	2003	24 pin main power cable 4 stick 12 V cable 6 Pin PCI State power cable SATA cable 4 thole peripheral cable floppy cablegram
EPS12V	2003	24 pin main power cable 8 pin 12 volt cable 6 Pivot PCI Fast power cable SATA cable 4 pin peripheral cable floppy cable
PCI Limited 2.0	2007	24 pin main power cable 4 pin 12 V cable 8 pin 12 volt cable 6 Pin PCI Express power cable 8 Pin PCI Express power cable SATA cable 4 pin peripheral device cable floppy disk cable

Original PC briny power cables

The original Personal computer debuted in 1981 and used two cables to connect the PSU (index supply) to the motherboard. The two cables plug side by English into the motherboard connectors. Sometimes they are keyed thus they only quid in one way and sometimes they aren't. Even if they're keyed you ass sneak in them the haywire way if you put a wee effort into information technology. You e'er have to remember to plug them in so the dark wires are next to each other. It's either "black to black" or smoke and a shower of sparks.

Pinout
Personal identification number	Wire color	Description
1	orange	power good
2	Red River	+5 volts or connector key
3	yellow	+12 volts
4	blue	-12 volts
5	black	earth
6	black	ground
1	black	footing
2	disgraceful	ground
3	white	-5 volts
4	red	+5 volts
5	red	+5 volts
6	red	+5 volts

Connector part numbers racket
Motherboard connector	Cable system connective	Terminals	Maximum current per lap
Molex 15-48-0106	Molex 90331	Molex 08-50-0276	5 amps

Unofficial cable/connector maximum electrical power delivery for main rails
Voltage rail	Number of lines	Maximum current	Maximum wattage
+5 volts	3 or 4	15 or 20 amps	75 or 100 watts
+12 volts	1	5 amps	60 watts

In old PCs, near all of the chips ran directly off of the 5 V rail. As a result the PSU delivers most of its wattage at 5 volts. There are three or four lines dedicated to the 5 V rail. The other main rails is 12 volts. That was used in the main to run magnetic disk drives, motors, and fans. The deuce negative track are "bias" supplies which only have to provide small amounts of current. Just for interest's sake, Here's the specification for the PSU which came with the original IBM PC. It provides a maximum of 63.5 watts. Son, those were the years.

Seminal IBM PC power supply
Voltage	Maximum current	Uttermost wattage
+5 volts	7.0 amps	35 Isaac Watts
-5 volts	0.3 amps	1.5 watts
+12 volts	2.0 amps	24 watts
-12 volts	0.25 amps	3 Isaac Watts

4 pin computer peripheral power line

The cardinal pin peripheral big businessman cable dates back to the underivative PC. It was used for lax drives and hard disks. IT's however around and is now also used for all kinds of things including add-on fans, extra video card might, supplemental motherboard power, and case ignition. It's as old as the hills but is still very wide misused. The connector is wrought so that it only fits in unmatched way. You don't have to worry nearly inserting it the wrong mode. People ofttimes function the terminal figure "4 pin Molex ability cable's length" or "4 PIN number Molex" to refer to a four pin peripheral power cablegram. It's not a technically useful term because the 4 pin 12 volt cable is also a 4 fall Molex cable (Molex makes lots of connectors) but "4 pin Molex" is ordinarily used to pertain to peripheral cables anyway.

Pinout
Personal identification number	Telegraph color	Description
1	yellow	+12 volts
2	black	ground
3	black	ground
4	red	+5 volts

Connector part numbers pool
Socket housing	Socket	Pin housing	Tholepin	Maximum current per circuit
AMP 1-480424-0	AMP 60619-1	AMP 1-480426-0	AMP 60620-1	13 amps

I don't know of any official definition of the maximum current allowed in a peripheral transmission line. The connector can handle 13 amps accordant to the manufacturer. But you normally find 18 awg wire in the peripheral cables. If you have an 18 inch cable (about a half a meter) and are running 13 amps through 18 gauge wire then you get a voltage drop of about 0.25 volts counting both the power wire and the ground (it's got to sound both ways) and the dissipation is some 3.3 watts. That's not respectable. I've reasonable played information technology safe and listed the maximum current arsenic 5 amps.

Unofficial cable/connection maximum wattage delivery
Voltage rail off	Number of lines	Maximum current	Supreme wattage
+5 volts	1	5 amps	25 watts
+12 volts	1	5 amps	60 watts

Current top executive supplies unremarkably make leastways two separate peripheral power cables, each of which has two or more circumferential connectors. When you're plugging in multiple high battery-powered devices it's a good idea to spread the load between all of your cables. Assume't just plug all your devices into one cable television service unless they're relatively low load devices. Spreading the current betwixt the cables reduces the emf drops and power loss. If they're relatively low current devices like fans or it's just a hard drive operating theatre two then it doesn't really matter. But if you're putt lots of hard disks into a computing device (some can draw nearly 3 amps at 12 volts when doing some operations) or connecting a video card's auxiliary power, then spread the loads 'tween the peripheral powerfulness cables. It's also helpful if you use a connector as approximately the PSU as possible rather than sticking things at the end of the cable. Extra wire retributory means more electromotive force drop. And if you're using a incidental connection to PCI Show adapter then be sure to jade all of the adapter's peripheral connectors into a separate PSU cable. They gave you two peripheral connectors for a reason. Plugging them both into the same PSU overseas telegram forces your video card to draw its 12 V power direct one 18 gauge wire. That increases your electromotive force pearl and top executive dissipation in the cable. Roughly contemporary commanding-end video cards tail end draw up to a higher degree 10 amps at 12 volts with most of it coming through the PCI Express connector so it pays to Be studious. It will credibly work if you don't spread the lading but in that respect's zero excuse for not doing it properly. They gave you multiple cables. You might as cured usage them. Plus there's evenhanded something creepy about having warm wires even if they'ray not melt.

You will occasionally run into peripheral connectors which don't deliver all four wires. They are usually 12 volt only cables intended for fans. Ne'er spark plug one of those into a disc drive. Drives require both 5 and 12 volts to be provided. Some of the deuce-wire peripheral connectors are for speed-controlled fans. That way that the voltage changes depending along the desired fan speed. The connector will only provide 12 volts when the fan is going full speed and the voltage decreases to slow the fan bolt down. By all odds put on't plug that one into anything but a fan! Usually this kind of peripheral connector has "fan" written on it to warn you. As long As a peripheral connector has four wires: one yellow, two black, and one red and it doesn't birth some kindly of written warning attached then information technology's a basic peripheral cable and you can hoopla it into anything.

Floppy drive power cable

The four PIN floppy drive off cable showed ascending when PCs started including 3.5 inch floppy drives. This kind of cable is also sometimes used A an auxiliary power line for AGP video cards which use more mogul than can be drawn from the motherboard slot. The connector is wrought so that it only fits in one way so you don't stimulate to worry about inserting information technology the base way. Floppy cables are built with small connectors and 20 awg electrify so they are limited to relatively low underway uses.

Pinout
Pin number	Wire color	Description
1	blood-red	+5 volts
2	black	ground
3	smutty	ground
4	yellowish	+12 volts

Connector part numbers
Socket housing	Socket	Maximum current per circuit
AMP 171822-4	AMP 170262-1	3 amps

Unofficial cable system/connective maximum wattage delivery
Voltage fulminate	List of lines	Maximum current	Maximum electric power
+5 volts	1	3 amps	15 watts
+12 volts	1	3 amps	36 watts

6 pin auxiliary power line

The aux power wire was added to provide extra electrical power to motherboards for 3.3 and 5 volts. This connector is rarely victimised anymore. IT's most ordinarily found on older dual Central processor AMD motherboards. You're more prospective to sight Sasquatch than a motherboard which uses this connecter. It plugs into the 6 pin version of the motherboard connector used past the original PC chief power cables.

Pinout
Pin number	Wire color	Description
1	black	establish
2	black	solid ground
3	black	ground
4	Orange	+3.3 volts
5	orange	+3.3 volts
6	red	+5 volts

Connector part numbers
Motherboard connection	Cable connection	Terminals	Utmost current per circuit
Molex 15-48-0106	Molex 90331-0010	Molex 08-50-0276	5 amps

Unofficial cable/connector maximum wattage delivery
Voltage rail	Number of lines	Maximum current	Maximal wattage
+3.3 volts	2	10 amps	33 watts
+5 volts	1	5 amps	25 watts

SATA power cablegram

SATA was introduced to ascent the ATA interface (also titled IDE) to a more advanced design. SATA includes both a data cable and a power cable length. The power cable replaces the old 4 pin peripheral cable and adds support for 3.3 volts (if amply implemented). The connector is shaped and so it can sole be blocked in the slump way.

Pinout
PIN number	Wire number	Conducting wire color	Description
1	5	orange	+3.3 volts
2	5	orange	+3.3 volts
3	5	orange tree	+3.3 volts
4	4	black	solid ground
5	4	black	soil
6	4	black	land
7	3	cherry-red	+5 volts
8	3	red	+5 volts
9	3	red	+5 volts
10	2	black	ground
11	2	black	ground
12	2	black	anchor
13	1	yellow	+12 volts
14	1	yellow	+12 volts
15	1	yellow	+12 volts

Connector part numbers
Transmission line connector	Terminals	Maximum current per circuit
Molex 67582-0000	Molex 67581-0000	1.5 amps

Official cable/connector maximum wattage delivery
Voltage vilify	Bi of lines	Maximum current	Maximal wattage
+3.3 volts	3	4.5 amps	14.85 watts
+5 volts	3	4.5 amps	22.5 watts
+12 volts	3	4.5 amps	54 watts

You have to atomic number 4 careful about SATA power cables. Some of them are lacking the 3.3 volt wire. Multitude with older power supplies oft use adapters which win over from 4 PIN peripheral cables to SATA power cables. But since 4 pin skirting connectors only supply 5 and 12 volts, the SATA connective is missing 3.3 volts (in that location's nobelium orangeness wire). There are too a couple of old power supplies which inexplicably induce SATA power cables which are missing the 3.3 V wire. Currently, SATA drives rarely use 3.3 volts. That may be because there are too many people victimization adapters and then the drive makers don't want the headaches which hail with using 3.3 volts. But in the future, 3.3 volt drives may become common so you pauperism to be careful when using SATA power cables which don't implement 3.3 volts.

ATX 20 fall main power line

In 1996 Microcomputer makers started switching to the ATX standard which defined a new 20 pin motherboard great power connector. Information technology includes a 3.3 V rail which is used to superpowe newer chips which require a lower voltage than 5 volts. It also has a secondary 5 volt rail in which is ever on even when the power render is sour off to provide standby power to the motherboard when the machine is sleeping. The new connective also allows the motherboard to turn the superpowe supply on and off rather than depend on the user to somersaultin a power switch. This connector is polarized so it can only be plugged in pointing in the correct direction.

Pinout
Pins 1 through and through 10			Pins 11 through 20
Description	Cable color	Pin list	Personal identification number	Wire color	Description
+3.3 volts	orange	1	11	orangeness	+3.3 volts
+3.3 volts	orange	2	12	blue	-12 volts
ground	dim	3	13	black	ground
+5 volts	red	4	14	green	PS_ON#
reason	black	5	15	Joseph Black	ground
+5 volts	scarlet	6	16	blackened	ground
ground	colored	7	17	black	ground
PWR_OK	gray	8	18	white	-5 volts (optional)
VSB +5 volts	noble	9	19	red	+5 volts
+12 volts	yellow	10	20	bolshy	+5 volts

Some of the voltage lines on the connector may wealthy person little sense wires which allow the power supply to sense what electromotive force is in reality seen by the motherboard. These are bad common on the 3.3 V line in PIN 11 but are sometimes victimized for other voltages excessively. The -5 V line on pin 18 was successful elective in ATX12V 1.3 (introduced in 2003) because -5 had been seldom used for years. Newer motherboards near never require -5 volts but many elder motherboards do. Most newer power supplies don't provide -5 volts in which case the Andrew Dickson White wire is missing.

Connector part numbers
Motherboard connector	Line connector	Terminals	Supreme current per circuit
Molex 39-28-1203	Molex 39-01-2200	Molex 39-00-0168, Molex 44476-1111	6 amps

Unofficial cable/connector uttermost wattage delivery for main rail
Voltage rail	Turn of lines	Maximum occurrent	Maximum wattage
+3.3 volts	3	18 amps	59 watts
+5 volts	4	24 amps	120 watts
+12 volts	1	6 amps	72 watts

Dell used to embark umpteen computers which used motherboards and power supplies which looked like plain old ATX but were not really ATX in the least. If you plugged a real ATX power provide into the motherboard and so things went kaboom (Beaver State frzzzzzap or ...). Woefully, some large computer vendors like to lock customers into buying upgrades from them instead from a third company. That's awful sufficiency just Dell built their not-standard computers and motherboards with what looked like standard ATX components. You only found out otherwise once sparks started flying. The Dingle PCs which were carrying this ticking time-bomb were made betwixt 1996 and 2000. If you're replacing a Dell power supply from this era past you should call Dingle and make sure it's not a proprietary contrive. And if they say yes then be sure to voice your displeasure. This is an evil lin practice which should stop.

You can ballyhoo a 20 pin ATX power cable into a motherboard with a 24 pin ATX connector. The image above shows the 20 pin power cable blocked into a 24 pin motherboard. A 20 pin power line only fits into unrivaled end of a 24 peg motherboard connector indeed you can't tuck information technology incorrectly. The 24 pivot motherboard connector is actually just the 20 pin connector with 4 extra pins added on the end. The original 20 pins were unchanged. The extra 4 pins are not secern rails. They'rhenium reasonable redundant lines to provide more current to the same rails. Happening every 24 pin motherboard I've seen, the extra lines for ground, 3.3, 5, and 12 are just connected to the other lines on the same rail from the 20 pin connector. I've never heard of exceptions and it doesn't make sense for motherboard makers to create any. As a result, you can plug a 20 PIN number cable into a 24 pin motherboard and it will work just powdered. At least, it will for a piece. They added those spare 4 pins for a reason. When you plug a 20 pin cable into a 24 pin connexion you're not providing the extra current carrying capacity which may be needed away the motherboard. If your motherboard's stream requirements are low enough past it wish work properly with only a 20 pin power cabled plugged in. But if the motherboard draws sufficiency current, then you can overheat the 20 pins you're using on the 24 pin connexion. I've seen enough pictures of burned ATX main connectors to assure you that this happens. In adding the extra four pins, 3.3 volts went from 3 to 4 lines. 5 volts when from 4 to 5 lines. 12 volts went from 1 to 2 lines so its capacity two-fold. Connectors really do acquire hot if you overload them so the safest thing to do is wont a literal 24 stick exponent supply happening a motherboard with a 24 pin connective. Note that your 24 PIN machine may work fine with a 20 pin might supply until you add a PCI Express card later on down the itinerant. PCI Express cards can draw up to 75 watts through the motherboard connection so adding an expansion card put up substantially increase power draw through with the main power cable. Many PCI Express video cards which let the 6 pin or 8 pin PCI Express power cable television still draw a substantial dower of their 12 volt lading done the PCI Utter one-armed bandit. The extra 4 pins doubled the current capacitance of the 12 volt rail so that one is rich to overload when only using a 20 immobilise chief power cable.

The moving picture supra shows an adapter which allows you to plug a 20 pin mogul supply into a 24 pin motherboard. These ut not solve the problems mentioned above. In fact, they ordinarily construct things worse. You still have only the same old 20 wires and pin&A;socket connectors that you would have if you plugged it directly into the motherboard. But with the adaptor you also have longer wires and another set of pins&sockets so you take a higher emf drop and more things which stern fail. All the adapter does is remove the problem from the 24 pin motherboard connexion and move it to the 20 pin connector on the adapter. About the only good thing it does is to make sure the 20 pin connector along the adapter melts rather than the 24 pin connector on the motherboard. You shouldn't underestimate the potential problems which come from adding other connector betwixt the power supply and the motherboard. The underground of connectors send away increase due to organism plugged and unplugged. Increasing the resistance makes the connector drop more than voltage and dissipate more estrus. Any bi of forceful changes john also cause higher connector resistance which causes many problems. You shouldn't set down an extra connector in a inebriated current path unless you've got a good conclude. That's a good rule for power cables in general but IT goes doubly for the high current draws you sometimes find through motherboard main power cables. The best practice session is to avoid these 20 to 24 pin adapters and get a substantial 24 pin world power supply.

ATX 24 pin primary power cable

The 24 pin main power connective was added in ATX12V 2.0 to provide extra power needed by PCI Express slots. The older 20 pin main power cable only has one 12 volt line. The new 24 pin connector added indefinite line apiece for ground, 3.3, 5, and 12 volts. The extra pins made the auxiliary power cable unnecessary so most ATX12V 2.x power supplies wear't have them. The 24 pin connector is polarized so it can simply atomic number 4 plugged in pointing in the correct focussing.

Pinout
Pins 1 direct 12			Pins 13 through with 24
Description	Wire gloss	Pin number	Pin number	Wire discolor	Verbal description
+3.3 volts	orange	1	13	orange	+3.3 volts
+3.3 volts	orange	2	14	blue	-12 volts
ground	black	3	15	blackamoor	establish
+5 volts	red	4	16	park	PS_ON#
ground	black	5	17	black	ground
+5 volts	red	6	18	colorful	ground
ground	African-American	7	19	black	ground
PWR_OK	gray	8	20	white	-5 volts (ex gratia)
VSB +5 volts	purple	9	21	red	+5 volts
+12 volts	yellow	10	22	red	+5 volts
+12 volts	yellow	11	23	red	+5 volts
+3.3 volts	Orange	12	24	total darkness	dry land

Close to of the voltage lines on the connector may have little sense wires which permit the power supply to sentience what voltage is actually seen by the motherboard. These are pretty common on the 3.3 volt line in tholepin 13 but are sometimes used for other voltages too. The -5 volt crinkle on pin 20 was ready-made optional in ATX12V 1.3 (introduced in 2003) because -5 had been rarely old for old age. Newer motherboards virtually never require -5 volts but many experient motherboards perform. Nearly newer power supplies don't provide -5 volts in which case the colourless wire is missing.

Connector part numbers
Motherboard connector	Cable connector	Terminals	Maximum rife per electrical circuit
Molex 39-28-1243	Molex 39-01-2240	Molex 39-00-0168, Molex 44476-1111	6 amps

Wildcat cable/connective level bes wattage delivery for independent rails
Voltage vilify	Numerate of lines	Maximum current	Maximum wattage
+3.3 volts	4	24 amps	79.2 watts
+5 volts	5	30 amps	150 watts
+12 volts	2	12 amps	144 Isaac Watts

If you possess an ATX power supply with a 24 rowlock important cable, it's okay to cud it into a motherboard with a 20 immobilise connector. It was designed to work that means. You can see an model in the picture above. The supernumerary 4 pins on the cable just knack over the end of the motherboard connector. The 24 pin cable only fits into a 20 rowlock socket at one remainder so you can't plug it in incorrectly. The extra 4 pins were added to the 24 pin version of the cable to provide one unneeded wire for ground, 3.3, 5, and 12 volts. Only information technology's okay to exit those 4 pins off because a motherboard with a 20 pin connector doesn't need them. The only job you can knock against into (literally) is if there is something blocking the smudge where the 24 pin cable hangs over the end. Or sometimes the end of the 20 thole motherboard connector is to a fault thick to fit 'tween the pins of the 24 pin cable. You can solve that problem by carefully shaving down one end of the 20 pin motherboard connecter. It's just plastic. You won't girl it. If you potty't get them to fit together then you can get an adaptor cable which will make it work. The 24 pin cable plugs into one end of the adapter and then the adapter plugs into the 20 pin motherboard. But you should head off using that sort of adapter if you can because the extra telegram and connector are vindicatory more things which force out go unjust. Adapters as wel slightly increase the electric potential fell which is something worth avoiding. It's better to first visit if you can get a 24 immobilise cable to fit into a 20 pin motherboard in front resorting to an adaptor.

ATX 20+4 oarlock main exponent cable

Motherboards can come with either a 20 pin main mightiness connector or a 24 pin main power connector. Many top executive supplies come with a 20+4 cable which is compatible with both 20 and 24 oarlock motherboards. A 20+4 power line has ii pieces: a 20 pin piece, and a 4 trap piece. If you leave the two pieces separated then you can plug the 20 pin composition into a 20 pin motherboard and leave the 4 pin bit unplugged. Comprise sure to leave the 4 pin piece unplugged even if it fits into another connector. The 4 pin piece is not matched with any other connectors. If you plug away the two pieces of a 20+4 power line together then you have a 24 pin power cable which can be plugged into a 24 pin motherboard.

4 pin ATX +12 volt power line

Older computers put most of their load on 3.3 and 5 volts. As time passed, computers drew more and more of their incumbrance from 12 volts (ascertain here). Before this power line was introduced on that point was just one 12 volt line provided to the motherboard. This cable added two more 12 volt lines so more of the load could beryllium shifted to 12 volts. The magnate coming from this connecter is usually used to power the Mainframe but some motherboards use IT for other things too. The presense of this connector on a motherboard means it's an ATX12V motherboard. For dual 12 volt rail power supplies, this connexion provides the voltage refered to as 12V2. The king cable television service which plugs into the 4 pin connecter has two smutty wires and two yellow wires. This overseas telegram is sometimes called an "ATX12V" cable or "P4" cable although neither of those are technically accurate descriptions.

If you have one of these connectors on a motherboard then you must plug a power cable into it or your CPU won't get any power. The ane elision is that when this connective was raw, some motherboards shipped with a socket into which you could plug a 4 pin peripheral power cable atomic number 3 an alternative. That helped the great unwashe who had older power supplies which didn't have the 4 pin 12 volt cable.

The 4 pin 12 V line is polarized soh it nates only be plugged into the 4 pin motherboard connector correctly. If you look with kid gloves at the picture above you can see that 2 of the pins are square and the other two have rounded corners. The motherboard connectors also have the Saame square and rounded arrangement then the power cable only fits in one way of life. At any rate that's true up unless you try really hard to force it into the connector. With enough force you can sometimes get a telegraph with a dinky number of pins into a connecter which doesn't equalise. If you look cautiously you can also see that the square and rounded practice matches various positions along other motherboard connectors like the 20 pin main magnate connector and 24 pin main magnate connection. Do yourself a privilege and only plug the 4 pin 12 volt cable into the motherboard connector where IT belongs (unless you savour fastball and fried components).

If your mightiness supply doesn't have a 4 pin 12 V cable past you can provide one with the adapter shown above. It converts a 4 pin off-base cable into a 4 pin 12 V cable.

Pinout
Pins 1, 2			Pins 3, 4
Description	Wire color	Pin turn	PIN number phone number	Wire color	Description
ground	black	1	3	yellow	+12 volts
ground	black	2	4	yellowed	+12 volts

Connector part numbers game
Motherboard connexion	Cable connector	Terminals	Maximum prevalent per circuit
Molex 39-28-1043	Molex 39-01-2040	Molex 39-00-0168, Molex 44476-1111	8 amps

Unofficial cable/connecter maximum electrical power delivery
Voltage railing	Number of lines	Maximum current	Maximum wattage
+12 volts	2	16 amps	192 watts

You can hype a 4 fall 12 volt power cable into an 8 PIN EPS motherboard connective but there's no guaranty that it will knead. If the motherboard expects only one 12 V rail then a 4 pin 12 V cable length may form. If the motherboard expects two 12 volt track (many another twofold CPU motherboards involve one 12 volt vituperate per CPU) so information technology won't put to work. Even if the motherboard works with a 4 pin 12 volt cable, you are still lonesome providing half of the current carrying capacity which would equal provided by an 8 pin EPS cable. That can overheat both the motherboard connector and 4 pin cable. Destroyed or liquid connectors can be a resultant role. A motherboard which has the 8 pin EPS connector expects a lot of current and you are taking a sedate risk by plugging in a 4 immobilise cable. The 4 pin cable lone fits at ace end of the 8 pin EPS motherboard connexion so you can't plug it in improperly. That is, IT exclusive fits into i end of the motherboard connector unless you force it. If the transmission line doesn't go into the socket easily then you'atomic number 75 probably trying to sparking plug information technology into the wrong remnant. Just then again, it's non a redeeming melodic theme to attempt to run with a 4 pin cable in an 8 pin motherboard anyway.

8 tholepin EPS +12 volt power cable

This cable was originally created for workstations to provide 12 volts to superpowe multiple CPUs. But as time has passed many CPUs require more 12 volt power and the 8 pin 12 volt cable is oftentimes used instead of a 4 pin 12 volt cable. Depending happening the power render, the connector may contain unmatchable 12 V rail in all 8 pins operating room two 12 V track taking up 4 pins apiece. IT is often refered to as an "EPS12V" cable.

The 8 pin 12 volt cable is polarized so it can only be blocked into the 8 pin motherboard connector correctly. If you look cautiously at the fancy above you can meet that four of the pins are square and the opposite four have rounded corners. The motherboard connectors also have the same square and rounded organization so the power cable simply fits in one way. At to the lowest degree that's true unless you try really indulgent to ram down it into the connector. With enough force you can sometimes get a telegraph with a teentsy number of pins into a connector which doesn't match. The 8 pin cable has decent pins that it's pretty hard to insert it in the wrong direction only set people might follow able to do it. If you wait carefully you can also see that the square and rounded pattern matches various positions happening other motherboard connectors like the 20 pin main power connector and 24 pin main king connector. You should only plug the 8 pin 12 V transmission line into the motherboard connector where it belongs unless you savour the smell of fried electronics.

You can too plug an 8 pin 12 volt cable into a 4 pin 12 volt motherboard connector. I don't ingest a picture of this one but it looks standardized to this. Four of the pins on the 8 pin cable burst into the motherboard connector and the other four pins hang off the last. The 8 pin cable only fits into unrivaled cease of the 4 pin motherboard connector unless you try sticky to force it into the wrong lay out. The 8 pin cable is electrically compatible but it may not fit into a 4 pin motherboard. There is often a component which blocks the area where the 4 pins would bent off the end. And sometimes the plastic end of the 4 flag connector is also thick to fit between the pins of the 8 PIN cable.

Make sure that you don't try to plug an 8 pin 12 volt cable into the 8 Pin PCI Express power connexion connected a picture add-in. The two cables attend very siamese so it's easy to get the two confused. 8 Pin PCI Express power cables are usually labeled to distinguish them from 8 PIN number 12 volt cables. The PCI Express cable normally has "PCI-E" printed on the connector. If there are no labels then you can usually use cable colors to tell the ii kinds of cables apart. An 8 pin 12 volt telegraph has yellow wires on the same side as the connexion clip. An 8 Pin PCI Express cable has black wires happening the clip side. The two force cables are also attuned differently so you can't plug one merciful of power line into the other kind of connector. Only as with this rather connecter, you can sometimes hale the wrong rather cable into a connector if you push hard sufficient. Make sure you have the right kind of cable before plugging IT in. The two are in spades not compatible with each other.

Pinout
Pins 1 through 4			Pins 5 through 8
Description	Wire color	Pin number	Pivot number	Wire color	Description
ground	black	1	5	yellow	+12 volts (12V1)
ground	black	2	6	yellow	+12 volts (12V1)
ground	fatal	3	7	yellow	+12 volts (12V1 or 12V2)
flat coat	black	4	8	yellow	+12 volts (12V1 or 12V2)

Connector part numbers
Motherboard connector	Cable connecter	Terminals	Maximum current per circuit
Molex 39-28-1083	Molex 39-01-2080	Molex 39-00-0168, Molex 44476-1111	7 amps

Unconfirmed cable/connector maximum wattage delivery
Emf rail	Enumerate of lines	Level bes electric current	Maximum wattage
+12 volts	4	28 amps	336 watts

If you don't have an 8 pin 12 volt cable then you can purpose the transcriber shown above. It converts a copulate of 4 pin peripheral power cables into an 8 pin 12 V cable. If you use incomparable of these adapters past be sure to wa the 4 pin skirting connectors into separate cables coming from the power supply. If you plug them both into the same power supply cable then you are drawing all the power of the 8 pin 12 V connector through a single 18 calibre wire. You can often get forth with that just there's no reason to do IT.

4+4 tholepin +12 volt king cable

Motherboards seat come with with either a 4 pin 12 volt connecter or an 8 pin 12 volt connection. Many world power supplies attach to a 4+4 pin 12 V cable which is well-matched with both 4 and 8 pin motherboards. A 4+4 power cable has two break u 4 oarlock pieces. If you chew the two pieces of a 4+4 power line together then you have a 8 flag power cable which can be plugged into an 8 pin 12 volt connector. If you leave the two pieces separated then you can hype unmatched of the 4 pin pieces into a 4 immobilize 12 V connector and leave the other 4 pin piece unplugged.

If you look after with kid gloves at the fancy supra then you can see the polarization of the pins which prevents you from plugging the cable in improperly. Some of the pins are square and more or less of them have rounded off corners. The motherboard connectors have twin solid and lingulate off corners to prevent the cable from existence plugged in the wrong way. But if you look really carefully at the rightfield half of this particular cable then depend at the 8 pin 12 volt cablegram delineate above you'll notice that they don't catch. A steady 8 pin cable has four square pins and cardinal rounded ones but the 4+4 cable shown above has two square pins and 6 rounded ones. The left half of the 4+4 matches the left half of an 8 pin cable but the decent half is different. Hmmmm... And this isn't some outlandish cable either. I've seen plenty of 4+4s which expect like this one. And then there are other 4+4 cables which look just like an 8 pin cable split in two (which makes sense). Since rounded pins jibe into square holes in motherboard connectors, this fussy cable bequeath fit but powdery into an 8 personal identification number 12 volt motherboard connecter. But both halves of this 4+4 will fit into a 4 rowlock 12 volt motherboard connector. You're supposed to use the left half of the cable shown above when plugging it into a 4 pin motherboard connector but the satisfactory half will also go. As it happens, either half will work fine in a 4 pin motherboard because both halves of the 4+4 antimonopoly provide 12 volts. The pinouts are the same for both halves so either one leave work. I'm non sure why they make cables ilk this one because you'd figure a 4+4 cable would just be an 8 pin cable which splits in 2. And you but need one half of a 4+4 cable to stopper into a 4 pin motherboard. The other half is new. Only the rather 4+4 cable shown preceding is bad park so don't let it shake off you.

6 pin PCI Express power line

This cable is accustomed provide extra 12 volt baron to PCI Express expansion card game. PCI Limited motherboard slots can provide a maximum of 75 watts. Numerous video cards draw and quarter importantly to a higher degree 75 watts so the 6 pin PCI Express power cable was created. These high-powered card game draw most of their top executive from the 12 volt rail so this cable provides merely 12 volts. These are sometimes called "PCI Evince cables". They are also occasionally called "PEG cables" where "PEG" stands for PCI Expressed Art. If your power supply doesn't induce a 6 pin PCI Express cable then you can use the adapter shown preceding on the the right way to convert two 4 pin skirting cables into a PCI Express cable. If you utilisation an adapter then represent secure to plug the 4 PIN peripheral connectors into separate cables approaching from the power cater. If you plug them both into the Saame power supply cable then you are drawing all the power of the PCI Express connector through a single 18 gauge wire. You can usually get away with that but there's zero argue to do it. The PCI Express 6 pin connective is polarized so it can only be blocked in pointing in the correct direction. But as with connectors of this type, you tush sometimes force-out them into the wrong benevolent of socket if you try thorny enough. If it doesn't microscope slide in easily then you're believably plugging it into the false place.

Some video cards come with the 8 pin PCI Expressage power connector to support higher wattage than the 6 pin PCI Express connectors. It's okay to plug a 6 pin PCI Express power line into an 8 pin PCI State connector. It's designed to work that way of life but will be limited to the lower wattage provided by the 6 stick version of the cable. The 6 pin telegraph only fits into ane end of the 8 trap connector so you can't enter it incorrectly but you can sometimes drive in the 6 fall telegraph in the wrong right smart if you try hard enough. Video cards can sense whether you bear plugged a 6 pin surgery 8 pin telegraph into an 8 pin connector so the video card can impose some kind of restriction when running with only a 6 pin power line. Some cards will decline to test with only a 6 pin cable in an 8 immobilise socket. Others wish work with a 6 rowlock cable at normal speeds but testament non allow overclocking. Check the video circuit board documentation to grow the rules. Just if you don't have whatsoever opposite information then just strike that if your picture card has an 8 immobilise connector so you must plug in an 8 pin cable.

Pinout
Pins 1 through 3			Pins 4 direct 6
Description	Electrify color	Personal identification number identification number	Pin keep down	Wire color	Description
+12 volts	cowardly	1	4	black	ground
+12 volts or non connected	yellow operating theater non connected	2	5	Shirley Temple	ground
+12 volts	yellow	3	6	black	priming coat

Connector part numbers
Video card connector	Cable connector	Terminals	Uttermost current per circuit
Molex 45558-0002	Molex 45559-0002	Molex 39-00-0168, Molex 44476-1111	8 amps

Official cable/connector maximum wattage delivery
Voltage rail	List of lines	Maximum current	Maximum wattage
+12 volts	3	2.083 amps	75 watts

The PCI Extract specification is, unfortunately, not a free, public specification. So most populate have never seen it. Including me. ATX specification: freely available to all. PCI Express specification: expensive so hardly anyone has seen it. ATX: good. PCI Limited: bad. It's a shame when a widely used standard ISN't freely uncommitted to the exoteric. Nonetheless, selective information leaks verboten from the spec and the 6 pin PCI Express power cable length is actually rated at an exceedingly conservative 75 watts. I feature no idea why the electrical power is rated and then low because the specifications from Molex clearly allow substantially more power. Contribution of the ground may be that PIN number 2 (listed above as a 12 volt line) may be registered as not connected in the specification. I've never seen a 6 pin PCI Express power line with pin 2 not connected. They've every last had a 12 volt line connected to oarlock 2. I've as wel seen claims that at that place English hawthorn be unimplemented sentience lines in the specification. Wanted to the uncertainty which happens when you don't give freely available specifications. Even with entirely two 12 volt lines the classic carrying out of PCI Carry power cables use large enough gage wire and a good connective to provide some many than the three amps per telegram required to provide 75 watts. Still, the 6 pin PCI Press out power line formally provides exclusively 75 watts. Altogether likelihood, however, real implementations of this mogul cable television can provide far many than 75 watts.

8 immobilize PCI Express baron cable

The PCI Show 2.0 stipulation released in January 2007 added an 8 pin PCI Express power cable. It's just an 8 pin version of the 6 Pin PCI Express power cable. Some are primarily wont to provide supplemental power to video cards. The older 6 pin version formally provides a maximum of 75 watts (although unofficially it lav usually provide much more) whereas the new 8 stick rendering provides a maximal of 150 watts. It is identical easy to fox the 8 pin version with the real similar-superficial EPS 8 pin 12 volt cable.

The 8 pin PCI Press out and the EPS 8 pin 12 volt connectors are polarized differently so you won't be capable to plug one kind of cable into the other kinda connector. That is, you won't be able to plug the wrong kind of cable in unless you try really hard. Unfortunately, the Molex Mini-fit Jr. connectors in use past some kinds of baron cables can sometimes be forced into a differently-polarized connector if they only have a some pins and you thrust hard sufficiency. If the cable won't slide in easily then you're probably trying to insert the wrong kinda cable. The 8 pin PCI Expressage connector does have a small constructive bridge which prevents it from being plugged into an EPS 8 pin 12 volt motherboard connector. You can see the bridgework in the see above between the rightmost deuce pins in the top row of the connector. Simply there's no more such protection to forestall EPS 8 pin 12 volt cables from existence plugged into an 8 pin PCI Express connector on a video card. That combination whitethorn fit if you shove heavily adequate. And if you plug in the wrong hospitable of cable then ask fireworks. Some of the grounds and 12 volts wires for an EPS 8 pin 12 volt are reversed compared to an 8 pin PCI Express. Fortunately, to the highest degree 8 PIN number PCI Explicit connectors are labeled "PCI-E" so people won't confuse them with EPS 8 pin 12 volt cables. If the connectors aren't tagged then you can assure an 8 pin PCI Express power cable from an EPS 8 pin 12 volt cable by checking the color of the wires which plug into the dress side of the connector. On the EPS 8 pin cable, the yellow wires (the 12 V wires) go into the clip side of the connector. On the 8 pin PCI Carry cable, the wires on the clip side are whol black (grounds). That's the same as it is with the 6 Pin PCI Convey exponent cable. Of course, none of this helps you if your overseas telegram uses the voguish whol-the-same-color-wires design which is popular with high-fashion power supplies. In that lawsuit you'll just have to be identical careful or hope the connectors are labeled.

Pinout
Pins 1 through 3			Pins 4 through and through 6
Description	Wire color	Pin number	PIN number	Cable color	Description
+12 volts	unhealthy	1	5	contraband	ground
+12 volts	yellow	2	6	covert	found
+12 volts	yellow-bellied	3	7	black	ground
ground	black	4	8	shameful	ground

Connector part numbers
Video card connecter	Cable connector	Terminals	Maximum current per circuit
?	?	?	?

Official cable's length/connector maximum wattage delivery
Potential difference rail	Number of lines	Maximum current	Maximum wattage
+12 volts	3	4.167	150 watts

6+2 oarlock PCI Express power line

Just about video card game deliver 6 Pin PCI Express big businessman connectors and others have 8 Pin PCI Express power connectors. Umteen superpowe supplies go with a 6+2 PCI Express power cable which is compatible with both kinds of video recording card game. The 6+2 PCI Express power cable is ready-made up of cardinal pieces: a 6 pin piece, and a 2 immobilise piece. If you put over the two pieces together and so you have a full 8 pin PCI Press out power cable. But if you split the connector into two parts then you can chew the 6 pin part into the older 6 pin PCI Express connector and leave the 2 tholepin part unplugged. That way, your power supply but needs to deliver one 6+2 cable to be compatible with both 6 oarlock and 8 immobilise PCI Express connectors.

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Source: http://www.playtool.com/pages/psuconnectors/connectors.html

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