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

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Prepare for the TESDA Computer System Servicing Test. Study with comprehensive materials, practice questions, and detailed explanations. Master the knowledge needed to excel at the exam!

Multiple Choice

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

Explanation:
In PC power supplies, wire colors map to specific voltages, and yellow is the standard color for the +12V rail. This high-current rail is used to power the CPU, GPU, and other power-hungry components, either directly or through the motherboard’s VRMs and PCIe/power connectors. That’s why the yellow wire is +12V. The red wire is +5V, the orange wire is +3.3V, and the blue wire is -12V, which is rarely used in modern systems.

In PC power supplies, wire colors map to specific voltages, and yellow is the standard color for the +12V rail. This high-current rail is used to power the CPU, GPU, and other power-hungry components, either directly or through the motherboard’s VRMs and PCIe/power connectors. That’s why the yellow wire is +12V. The red wire is +5V, the orange wire is +3.3V, and the blue wire is -12V, which is rarely used in modern systems.

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