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%Start 24-pin Motherboard Power Connector Pinout GA S REGULAR Menu Lifewire Tech for Humans Newsletter! Search Close GO Computers, Laptops & Tablets &gt; Accessories & Hardware 163 163 people found this article helpful <h1> ATX 24-pin 12V Power Supply Pinout</h1> <h2> Pinout for the Standard ATX 24-pin 12V Motherboard Power Connector</h2> By Tim Fisher Tim Fisher Senior Vice President & Group General Manager, Tech & Sustainability Emporia State University Tim Fisher has more than 30 years&#39; of professional technology experience. He&#39;s been writing about tech for more than two decades and serves as the VP and General Manager of Lifewire.
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%Start 24-pin Motherboard Power Connector Pinout GA S REGULAR Menu Lifewire Tech for Humans Newsletter! Search Close GO Computers, Laptops & Tablets > Accessories & Hardware 163 163 people found this article helpful

ATX 24-pin 12V Power Supply Pinout

Pinout for the Standard ATX 24-pin 12V Motherboard Power Connector

By Tim Fisher Tim Fisher Senior Vice President & Group General Manager, Tech & Sustainability Emporia State University Tim Fisher has more than 30 years' of professional technology experience. He's been writing about tech for more than two decades and serves as the VP and General Manager of Lifewire.
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Chloe Santos 2 minutes ago
lifewire's editorial guidelines Updated on May 26, 2022 Tweet Share Email Tweet Share Email Accessor...
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Noah Davis 4 minutes ago
If you're using this pinout table to test power supply voltages, be aware that the voltages must be ...
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lifewire's editorial guidelines Updated on May 26, 2022 Tweet Share Email Tweet Share Email Accessories & Hardware The Quick Guide to Webcams Keyboards & Mice Monitors Cards HDD & SSD Printers & Scanners Raspberry Pi The ATX 24-pin power supply connector is the standard motherboard power connector in computers today. The connector itself is a Molex 39-01-2240 connector, often called a Molex Mini-fit Jr. <h2> ATX 24-Pin 12V Power Connector Pinout ATX v2 2 </h2> Below is the complete pinout table for the standard ATX 24-pin 12V power supply connector as of Version 2.2 of the ATX Specification (PDF).
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lifewire's editorial guidelines Updated on May 26, 2022 Tweet Share Email Tweet Share Email Accessories & Hardware The Quick Guide to Webcams Keyboards & Mice Monitors Cards HDD & SSD Printers & Scanners Raspberry Pi The ATX 24-pin power supply connector is the standard motherboard power connector in computers today. The connector itself is a Molex 39-01-2240 connector, often called a Molex Mini-fit Jr.

ATX 24-Pin 12V Power Connector Pinout ATX v2 2

Below is the complete pinout table for the standard ATX 24-pin 12V power supply connector as of Version 2.2 of the ATX Specification (PDF).
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If you're using this pinout table to test power supply voltages, be aware that the voltages must be within ATX specified tolerances. Pinout Reference Pin Name Wire Color Description 1 &#43;3.3V Orange &#43;3.3 VDC 2 &#43;3.3V Orange &#43;3.3 VDC 3 COM Black Ground 4 &#43;5V Red &#43;5 VDC 5 COM Black Ground 6 &#43;5V Red &#43;5 VDC 7 COM Black Ground 8 PWR_ON Gray Power Good 9 &#43;5VSB Purple &#43;5 VDC Standby 10 &#43;12V1 Yellow &#43;12 VDC 11 &#43;12V1 Yellow &#43;12 VDC 12 &#43;3.3V Orange &#43;3.3 VDC 13 &#43;3.3V Orange &#43;3.3 VDC 14 -12V Blue -12 VDC 15 COM Black Ground 16 PS_ON# Green Power Supply On 17 COM Black Ground 18 COM Black Ground 19 COM Black Ground 20 NC White -5 VDC (Optional - Removed in ATX12V v2.01) 21 &#43;5V Red &#43;5 VDC 22 &#43;5V Red &#43;5 VDC 23 &#43;5V Red &#43;5 VDC 24 COM Black Ground The pinouts for the 15-pin SATA Power Connector, 4-pin Peripheral Power Connector, 4-pin Floppy Drive Power Connector, and for other ATX power supply connectors can be seen in our&nbsp;ATX Power Supply Pinout Tables list.
Ava White Moderator
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If you're using this pinout table to test power supply voltages, be aware that the voltages must be within ATX specified tolerances. Pinout Reference Pin Name Wire Color Description 1 +3.3V Orange +3.3 VDC 2 +3.3V Orange +3.3 VDC 3 COM Black Ground 4 +5V Red +5 VDC 5 COM Black Ground 6 +5V Red +5 VDC 7 COM Black Ground 8 PWR_ON Gray Power Good 9 +5VSB Purple +5 VDC Standby 10 +12V1 Yellow +12 VDC 11 +12V1 Yellow +12 VDC 12 +3.3V Orange +3.3 VDC 13 +3.3V Orange +3.3 VDC 14 -12V Blue -12 VDC 15 COM Black Ground 16 PS_ON# Green Power Supply On 17 COM Black Ground 18 COM Black Ground 19 COM Black Ground 20 NC White -5 VDC (Optional - Removed in ATX12V v2.01) 21 +5V Red +5 VDC 22 +5V Red +5 VDC 23 +5V Red +5 VDC 24 COM Black Ground The pinouts for the 15-pin SATA Power Connector, 4-pin Peripheral Power Connector, 4-pin Floppy Drive Power Connector, and for other ATX power supply connectors can be seen in our ATX Power Supply Pinout Tables list.
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<h2> More Information on the ATX 24-Pin 12V PSU Connector </h2> The 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 the pins take a unique shape, one the motherboard matches in only one direction.
Victoria Lopez Member
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More Information on the ATX 24-Pin 12V PSU Connector

The 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 the pins take a unique shape, one the motherboard matches in only one direction.
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Isabella Johnson 15 minutes ago
Lifewire / Alex Dos Diaz The original ATX standard supported a 20-pin connector with a very similar ...
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Lifewire / Alex Dos Diaz 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 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).
Charlotte Lee Member
access_time 5 minutes ago
Lifewire / Alex Dos Diaz 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 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).
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Charlotte Lee 2 minutes ago
1:20

How to Manually Test a Power Supply With a Multimeter

24-Pin & 20-Pin Comp...

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Isaac Schmidt 5 minutes ago
Some motherboards allow the reverse: to use the older 20-pin power supply cable on a 24-pin motherbo...
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1:20 <h3> How to Manually Test a Power Supply With a Multimeter</h3> <h2> 24-Pin &amp 20-Pin Compatibility </h2> The additional four pins are usually detachable (see the lower part of the image above), allowing it to be used on a 20-pin motherboard connection. The extra pins simply hang over the motherboard connector—they don&#39;t plug into another slot.
Jack Thompson Member
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1:20

How to Manually Test a Power Supply With a Multimeter

24-Pin & 20-Pin Compatibility

The additional four pins are usually detachable (see the lower part of the image above), allowing it to be used on a 20-pin motherboard connection. The extra pins simply hang over the motherboard connector—they don't plug into another slot.
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Henry Schmidt 2 minutes ago
Some motherboards allow the reverse: to use the older 20-pin power supply cable on a 24-pin motherbo...
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Chloe Santos 29 minutes ago
Although the motherboard appears to accept all 24 pins using this type of adapter, it still means th...
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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.
Hannah Kim Member
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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.
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Christopher Lee 1 minutes ago
Although the motherboard appears to accept all 24 pins using this type of adapter, it still means th...
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Although the motherboard appears to accept all 24 pins using this type of adapter, it still means the additional four pins go unused. Was this page helpful?
Christopher Lee Member
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Although the motherboard appears to accept all 24 pins using this type of adapter, it still means the additional four pins go unused. Was this page helpful?
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Thanks for letting us know! Get the Latest Tech News Delivered Every Day Subscribe Tell us why! Other Not enough details Hard to understand Submit More from Lifewire ATX Power Supply Pinout Tables 15-Pin SATA Power Connector Pinout How to Manually Test a Power Supply With a Multimeter How to Use a Power Supply Tester to Test a PSU 4-pin Floppy Drive Power Connector Pinout What is a PSU?
Nathan Chen Member
access_time 27 minutes ago
Thanks for letting us know! Get the Latest Tech News Delivered Every Day Subscribe Tell us why! Other Not enough details Hard to understand Submit More from Lifewire ATX Power Supply Pinout Tables 15-Pin SATA Power Connector Pinout How to Manually Test a Power Supply With a Multimeter How to Use a Power Supply Tester to Test a PSU 4-pin Floppy Drive Power Connector Pinout What is a PSU?
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What is an ATX Power Supply? 4-pin Peripheral Power Connector Pinout Power Supply Voltage Tolerances...
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What is an ATX Power Supply? 4-pin Peripheral Power Connector Pinout Power Supply Voltage Tolerances 4-pin Motherboard Power Connector Pinout Motherboard Fan Connectors: What They Are and How They Work ATX 6-pin Motherboard Power Connector Pinout How to Reseat Internal Data and Power Cables What Is a PATA Cable or Connector? How to Fix STOP 0x0000005C (HAL_INITIALIZATION_FAILED) How to Install a Desktop Power Supply How to Control the CPU Fan on Windows 10 Newsletter Sign Up Newsletter Sign Up Newsletter Sign Up Newsletter Sign Up Newsletter Sign Up By clicking “Accept All Cookies”, you agree to the storing of cookies on your device to enhance site navigation, analyze site usage, and assist in our marketing efforts.
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