Password power source ATX 24-pin is the standard motherboard power connector in today's computers. The connector itself is a Molex 39-01-2240 connector, often referred to as Molex Mini-fit Jr.
ATX 24-Pin 12V Power Connector Pinout (ATX v2.2)
Below is the complete pinout table for a standard ATX 24-pin 12V power supply connector as of ATX Specification Version 2.2 (PDF).
Note: Test power supply voltages. They must be within the specified ATX tolerances.
|
Pinout Reference |
|||
|
pine |
اسم | wire color | Describe |
|
1 |
+ 3.3V | Orange | + 3.3 VDC |
| 2 | + 3.3V | Orange |
+ 3.3 VDC |
|
3 |
COM | Black | Grounds |
|
4 |
+ 5V | Red | + 5 VDC |
|
5 |
COM | Black |
Grounds |
|
6 |
+ 5V | Red | + 5 VDC |
|
7 |
COM | Black | Grounds |
|
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 |
Grounds |
|
16 |
PS_ON# | Green | Power Supply On |
| 17 | COM | Black |
Grounds |
|
18 |
COM | Black | Grounds |
| 19 | COM | Black |
Grounds |
|
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 |
Grounds |
The pinouts for the 15-pin SATA power connector, the 4-pin peripheral power connector, the 4-pin floppy drive power connector, and other ATX power supply connectors can be seen in the ATX power supply connection table.
More information about the ATX 24-Pin 12V PSU connector
The power supply connector can only be connected when facing a specific direction on the motherboard. If you look closely at the following illustration, you'll see that the pins have a unique shape, one of which matches the motherboard in only one direction.
The original ATX standard supported a 20-pin connector with a pinout very similar to 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, thus eliminating the need for 12V ATX power supplies to provide an additional power cable (although some may still need it).
agree 24-Pin & 20-Pin
The four additional pins are usually detachable (see the bottom of the image above), allowing them to be used in a 20-pin motherboard connection. The additional pins simply hang over the motherboard connector—they don't connect to any other slot. Some motherboards allow the reverse: using 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 24-pin cable, there are a number of online retailers where you can purchase a 24-pin to 20-pin adapter, such as this StarTech adapter from Amazon. Although the motherboard appears to accept all 24 pins using this type of adapter, it still means that the extra four pins will go unused.
