Which power connector is commonly used in desktop computers?

The 24-pin ATX power connector is the standard connector used in desktop computers to supply power to the motherboard. This connector provides a combination of 3.3V, 5V, and 12V power lines supplied from the power supply unit (PSU) to the motherboard, powering essential components such as the CPU, RAM, and other onboard circuitry.

The 24-pin design includes additional wiring to support modern hardware requirements, offering more power and ensuring stability as more components are added to the system. The connection is integral for any typical desktop setup, making it indispensable for building or upgrading computers.

In contrast, while the 6-pin PCIe connector is used to provide additional power to graphics cards, it is not the primary power connection for the entire system. USB-C is more commonly associated with peripherals and newer devices rather than internal power delivery within a desktop computer's architecture. The 3-pin Molex connector, although used for older power supplies and devices, has largely been phased out in favor of the more versatile and higher-capacity connectors like the 24-pin ATX, making it less relevant in contemporary setups.