What is the volt rating of the yellow wire in a PSU?

The voltage rating of the yellow wire in a Power Supply Unit (PSU) is commonly recognized to be +12V. This wire is typically used to deliver power to components that require higher voltage, such as CPUs and graphics cards, which often operate at +12V.

The +12V rail is crucial for modern computing needs, as it powers many of the high-demand components within a computer. Understanding the color coding in PSUs is essential for correctly identifying and utilizing the power supplied to various components.

While the other options represent other voltages provided by the PSU, including +3.3V (often indicated by orange wires), +5V (red wires), and -12V (blue wires), they do not apply to the yellow wire specifically. Consequently, knowing that the yellow wire corresponds to the +12V output is key for anyone working with or troubleshooting computer power systems.