What Is Molex Power Connector?

Molex power connector is a type of electrical connector that has been in use for decades in the computer and electronics industries. The connector was first introduced by Molex Incorporated, a leading global supplier of electronic components and solutions. The Molex connector is popularly known by several names, such as MLX, Mini-Fit, and Micro-Fit, to mention a few.

Molex power connectors are commonly used for connecting power supply units (PSUs) to various components in the computer system, such as hard drives, optical drives, and fans. These connectors feature a modular design with a female housing and male pins, allowing for easy connection and disconnection of components. The Molex power connector also comes in different variants, with varying pin counts and sizes to suit diverse applications. This makes it a versatile and widely used connector type in the electronics industry.

What is Molex Power Connector?

A Molex power connector is a type of electrical connector that is commonly used to provide power to computer components such as hard disk drives, optical drives, and fans. It was originally developed by Molex Incorporated, a company that specializes in manufacturing electronic connectors.

Here are some key points to note about Molex power connectors:

– Molex power connectors are typically designed to work with a specific voltage, such as 5V or 12V.
– They are usually made up of two or more pins or terminals that connect to the component they are providing power to.
– Molex power connectors come in various shapes and sizes, depending on the application, but they are generally rectangular and have a locking mechanism to prevent accidental disconnection.
– Molex power connectors are often used in conjunction with other types of connectors, such as SATA power connectors, to provide power to multiple components within a computer system.
– They are easy to install and remove, and can usually be plugged in or unplugged without the need for tools.
– Molex power connectors are known for their reliability and durability, and are able to withstand high temperatures and heavy usage over long periods of time.

Overall, Molex power connectors are an important component in computer systems, providing a reliable source of power to critical components.


1. What is a Molex power connector?

A Molex power connector is an electrical connector commonly used in computer systems to supply power to the various components, including hard drives, optical drives, and fans.

2. How many pins does a standard Molex power connector have?

A standard Molex power connector typically has four pins arranged in a square pattern.

3. Can Molex power connectors be used to power graphics cards?

Yes, Molex power connectors can be used to provide power to certain types of graphics cards, although newer graphics cards often require dedicated PCIe power connectors.

4. Are all Molex power connectors interchangeable?

No, Molex power connectors come in different variants, and not all are interchangeable. It’s important to make sure you get the right connector for your specific hardware needs.

5. Is it safe to use Molex power splitters to power multiple devices from a single connector?

Yes, as long as the total power draw of the connected devices does not exceed the maximum power rating of the connector, it is safe to use Molex power splitters to power multiple devices.


In summary, the Molex power connector is a type of electrical connector that is commonly used in various electronic devices, particularly in computer systems. It provides a secure and reliable connection for powering up various components of the device. Understanding the function and features of the Molex power connector is essential for both technicians and ordinary users alike to ensure the safe and efficient operation of electronic equipment. With its versatility and convenience, the Molex power connector has undoubtedly played a significant role in the advancement and evolution of the electronics industry.

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