ATX Advanced Technology eXtended is a motherboard and power supply configuration specification developed by Intel in to improve on previous de facto standards like the AT design.Sofi e lui
It was the first major change in desktop computer enclosuremotherboard and power supply design in many years, improving standardization and interchangeability of parts. ATX is the most common motherboard design.
The official ATX specifications were released by Intel in and have been revised numerous times since. The most recent ATX motherboard specification is version 2. An advantage of having an EATX motherboard is dual socket support.
Some manufacturers introduced the new standard; however, in Intel discontinued any future development of BTX. As of [update]the ATX design still remains popular. On the back of the computer case, some major changes were made to the AT standard.
Originally AT style cases had only a keyboard connector and expansion slots for add-on card backplates. Any other onboard interfaces such as serial and parallel ports had to be connected via flying leads to connectors which were mounted either on spaces provided by the case or brackets placed in unused expansion slot positions. ATX allowed each motherboard manufacturer to put these ports in a rectangular area on the back of the system with an arrangement they could define themselves, though a number of general patterns depending on what ports the motherboard offers have been followed by most manufacturers.
Other legacy connectors that are slowly being phased out of modern ATX motherboards include pin parallel ports and 9-pin RS serial ports.
A notable issue with the ATX specification was that it was last revised when power supplies were normally placed at the top, rather than the bottom, of computer cases. This makes it very difficult for cables from bottom mounted power supplies to reach, and commonly requires a special cutout in the back plane for the cable to come in from behind and bend around the board, making insertion and wire management very difficult. Many power supply cables barely reach or fail to reach, or are too stiff to make the bend, and extensions are commonly required due to this placement.
Several ATX-derived designs have been specified that use the same power supply, mountings and basic back panel arrangement, but set different standards for the size of the board and number of expansion slots. Standard ATX provides seven slots at 0. Here width refers to the distance along the external connector edge, while depth is from front to rear.
Note each larger size inherits all previous smaller colors area.Wilhelmsen ship management fleet list
Electrical Engineering Stack Exchange is a question and answer site for electronics and electrical engineering professionals, students, and enthusiasts. It only takes a minute to sign up. However, doing this cleanly means wiring in a switch to do this, but my PSU already has its own switch on the back which I'd like to just use instead, rather than two separate switches. I'd very much appreciate any help in describing how to do this. Please treat me as a relative novice for any answer; although I'm comfortable soldering things, mostly all I've done is things like creating my own splitter or adapter cables for computers and even then, only simple ones.
It's been quite a while since I had to design a circuit, work out what resistors I need and where etc. This is used for sequencing purposes e. When 5V line is ready enable the 3. For as long as a computer is turned on, the motherboard is keeping it grounded. You just want to make sure that you turn off the power supply before you connect or disconnect any load. Sign up to join this community.
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Home Questions Tags Users Unanswered. Asked 6 years, 4 months ago. Active 4 years, 10 months ago. Viewed 19k times. Haravikk Haravikk 2 2 gold badges 3 3 silver badges 6 6 bronze badges. Active Oldest Votes. In that case I've misunderstood the specification. This avoids major overshoots but it may delay your control loop, so be careful not to make it too large. DoxyLover DoxyLover 6, 1 1 gold badge 14 14 silver badges 22 22 bronze badges.
It uses the standby 12v or 5v to turn the rest of the power supply on, when you turn the computer on. And you can hotswap loads at any time. As for my no-hot-swap comment, yes, the power supply is fine with adding and removing loads hot. However, this assumes the properly rated connectors Thus, my connect.Your question may be answered by sellers, manufacturers, or customers who purchased this item, who are all part of the Amazon community.
Please make sure that you are posting in the form of a question. Please enter a question. Ideal for use in many applications. Especially convenient for quickly switching your power supply on and off to pulse your water pump to eliminate water bubbles from your water cooling loop.Cs80 vst
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ATX power supply connector pinout
Sell on Amazon. Image Unavailable Image not available for Color:. This fits your. PillPack by Amazon Pharmacy. Have a question? There was a problem completing your request. Please try your search again later. Product information Package Dimensions 5.
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A properly executed PSU test using a multimeter should confirm that the power supply is in good working order or if it should be replaced. These instructions apply to a standard ATX power supply.
Almost all modern consumer power supplies are ATX power supplies. Manually testing a power supply involves working closely with high voltage electricity.
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Don't skip this step! Safety should be your primary concern during a power supply test and there are several points you should be aware of before starting this process. Open your computer's case.
In short, this involves turning off the computer, removing the power cable, and unplugging anything else connected to the outside of your computer. To make testing your power supply easier, you should also move your disconnected and open computer case somewhere easy to work like on a table or other flat, non-static surface.
An easy way to confirm that each power connector is unplugged is to work from the bundle of power cables coming from the power supply inside the PC. Each group of wires should terminate to one or more power connectors. There is no need to remove the actual power supply unit from the computer nor is there any reason to disconnect any data cables or other cables not originating from the power supply.
As you're organizing the power cables, we highly recommend rerouting them and pulling them as far away from the computer case as possible. This will make it as easy as possible to test the power supply connections. Confirm that the power supply voltage switch located on the power supply is properly set for your country. Check the Foreign Outlet Guide for voltage settings in other countries. Plug the PSU into a live outlet and flip the switch on the back of the power supply.
Assuming that the power supply is at least minimally functional and that you've properly shorted the pins in Step 5, you should hear the fan begin to run.Invalid spi ikev2
Some power supplies don't have a switch on the back of the unit. If the PSU you're testing doesn't, the fan should begin to run immediately after plugging the unit into the wall. Just because the fan is running doesn't mean that your power supply is supplying power to your devices properly. You'll need to continue testing to confirm that. If the multimeter you're using doesn't have an auto-ranging feature, set the range to Test the pin motherboard power connector:.
Connect the negative probe on the multimeter black to any ground wired pin and connect the positive probe red to the first power line you want to test. We recommend testing every pin on the pin connector that carries a voltage.
This will confirm that each line is supplying the proper voltage and that each pin is properly terminated.The ATX 24 pin power supply connector is the standard motherboard power connector in computers today. Below is the complete pinout table for the standard ATX 24 pin 12V power supply connector as of Version 2.
If you're using this pinout table to test power supply voltagesbe aware that the voltages must be within ATX specified tolerances.
Power Supply Connectors and Pinouts
The ATX 24 pin 12V power supply connector can only be plugged in while pointing a specific direction on the motherboard. If you look carefully at the following illustration, you can see that the pins take a unique shape, a shape which the motherboard matches in only one direction. The original ATX standard supported a 20 pin connector with a very similar pinout as the 24 pin connector but with pins 11, 12, 23, and 24 omitted. This means that the newer 24 pin power supply is useful for motherboards that require more power, and therefore eliminates the need for ATX 12V power supplies to provide an auxiliary power cable although some still may.
The additional four pins are usually detachable like you can probably see in the lower part of the image aboveallowing it to be used on a 20 pin motherboard connection.
The extra block of pins simply hangs over the motherboard connector - they don't plug into another slot. Some motherboards allow the reverse: to use the older 20 pin power supply cable on a 24 pin motherboard connection.
If you need to use a 24 pin power supply connector on a motherboard that only accepts a 20 pin cable, there are a number of online retailers where you can purchase a 24 pin to 20 pin adapter, like this StarTech adapter from Amazon. Though the motherboard appears to accept all 24 pins using this type of adapter, it still, of course, means that the additional four pins go unused. Tweet Share Email. The connector itself is a Molex connector, often called a Molex Mini-fit Jr.
More from Lifewire.Maybe in some cases you want to test an old CD-Rom Drive or something else. Here I show you how do to it. Did you use this instructable in your classroom? Add a Teacher Note to share how you incorporated it into your lesson. Just look after the green wire in the cable tree from the PSU. Follow it to the 20 or 24pin ATX plug. The green cable is in a way the "reciever" you need to power up the PSU.
Now it's time for the wire. Cause the black is the ground. To come off best you should connect the green with black besides the green. Your PSU should power up immendiatly! You are done! When you do this make sure that you have some device s connected to the PSU. Otherwise your PSU tries to drive the non-existing device an will overheat. Add a switch instead the wire! Ready to go! BTW: I'm German. Maybe my English isn't so good Question 4 months ago. This Pwr Sply was just working. Found bad connection from Frt Pnl Switch to Mobo so fixed it but no good; still dead.
Right now it's out of its case and on the shelf waiting for field medics to check it out. Otherwise, can you advise where to get a replacement for it???
Any other ideas?Advanced Search Search Tips. Standard 4. The 24 pin main power connector was added in ATX12V 2. The older 20 pin main power cable only has one 12 volt line. The new 24 pin connector added one line apiece for ground, 3.
The extra pins made the auxiliary power cable unnecessary so most ATX12V 2. The 24 pin connector is polarized so it can only be plugged in pointing in the correct direction. Some of the voltage lines on the connector may have smaller sense wires which allow the power supply to sense what voltage is actually seen by the motherboard. These are pretty common on the 3. The -5 volt line on pin 20 was made optional in ATX12V 1. Newer motherboards virtually never require -5 volts but many older motherboards do.
Most newer power supplies don't provide -5 volts in which case the white wire is missing. If you have an ATX power supply with a 24 pin main cable, it's okay to plug it into a motherboard with a 20 pin connector. It was designed to work that way. You can see an example in the picture above. The extra 4 pins on the cable just hang over the end of the motherboard connector.Fly on screen prank
The 24 pin cable only fits into a 20 pin socket at one end 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 extra wire for ground, 3. But it's okay to leave those 4 pins disconnected because a motherboard with a 20 pin connector doesn't need them. The only problem you can bump into literally is if there is something blocking the spot where the 24 pin cable hangs over the end. Or sometimes the end of the 20 pin motherboard connector is too thick to fit between the pins of the 24 pin cable.Armalaser green
You can solve that problem by carefully shaving down one end of the 20 pin motherboard connector. It's just plastic. You won't miss it. If you can't get them to fit together then you can get an adapter cable which will make it work.
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