What is a 24 pin connector to a power supply?

What is a 24 pin connector to a power supply?

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.

What is the 24 pin connector on a motherboard for?

It connects a power supply to an ATX style motherboard. A power supply with a 24-pin connector can be used on a motherboard with a 20-pin connector by leaving the four additional pins disconnected. However, if you have a 24-pin connection on your motherboard all 24-pins need to be connected.

Does every power supply have a 24 pin connector?

Almost all of the new power supplies used today feature a 24-pin power connector to connect to a computer motherboard. However, some motherboards still feature a 20-pin ATX power connection. Thankfully, almost all 24-pin power connectors are designed so that four of the pins can be detached or moved out of the way.

Can I use a 24 pin power supply on a 20 pin motherboard?

The 24 pin power supply is always pin compatible with a 20 pin board. The first 20 pins are the same. The extra 4 are to provide additional power for PCI Express. If your board doesn’t have them, then it doesn’t need them.

What is the use and function of 20 24 pin Molex connector?

In 20/24-pin configurations, the Mini-Fit Jr. connector may be used on ATX motherboards as the main power connector. The same style of connector, in single or paired 4-, 6-, or 8-pin configurations, may be used for additional CPU power and graphics card power.

Can I use a 20 pin connector on a 24 pin motherboard?

“… you can plug a 20 pin cable into a 24 pin motherboard and it will work just fine. At least, it will for a while. They added those extra 4 pins for a reason. When you plug a 20 pin cable into a 24 pin connector you’re not providing the extra current carrying capacity which may be needed by the motherboard.

Why is there a pin missing on my 24 pin connector?

Most likely it is because the -5V rail has been removed from modern power supplies. If your power supply unit has an empty pin on the 24 pin connector (see picture above), then your unit does not have a -5V rail.

Can I plug a 20 pin into a 24 pin motherboard?

Can I use a 24 pin PSU on a 20 pin motherboard?

The 24 pin power supply is always pin compatible with a 20 pin board. The first 20 pins are the same. The extra 4 are to provide additional power for PCI Express.

How do you connect a 20 pin to a 24 pin motherboard?

Technically, a 20-pin ATX connector can be plugged straight into a 24-pin motherboard socket, leaving male pins 11, 12, 23, and 24 unconnected. The four pins that you are leaving open are just redundant lines for higher current capability (see this guide to ATX connectors and pinouts).

What are the power connectors for a PSU?

Some PSUs may have three or four 12 volt 4-pin connectors. The p/n for a standard P4 is 39-01-2040 or equivalent. Peripheral power connector goes to disk drives, colling fans, and other smaller devices. There may also be a floppy drive cable.

How many pins are there in a PSU?

There are three pins for each voltage. One pin from each voltage is used for pre-charge in the backplane. The mating serial plug of ATA devices contains both signal and power segments. PSU over 450W designed for high-end discrete graphics cards normally have additional 2×3 or 2×4 connectors.

Can a 4 pin power supply be plugged into a 24 pin motherboard?

The 4 pin piece is not compatible with any other connectors. If you plug the two pieces of a 20+4 power cable together then you have a 24 pin power cable which can be plugged into a 24 pin motherboard. This cable was originally created for workstations to provide 12 volts to power multiple CPUs.

Where is the power button on a PSU?

This power button is attached to the motherboard and it is that that tells the PSU to power up via a specific pin on the main 24-pin connector.