The red wire in a standard PSU provides which voltage?

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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 red wire in a standard PSU provides which voltage?

Explanation:
Wiring color coding in ATX power supplies maps voltages to colors, with red indicating +5V. This rail powers digital logic on the motherboard and many older components that rely on five volts. Other rails use different colors: +3.3V is orange, +12V is yellow, and -12V is blue. A +5V standby rail (used when the power is off but the system can wake up) is purple. The -5V level is generally not used in modern PSUs. So the red wire provides the +5V rail.

Wiring color coding in ATX power supplies maps voltages to colors, with red indicating +5V. This rail powers digital logic on the motherboard and many older components that rely on five volts. Other rails use different colors: +3.3V is orange, +12V is yellow, and -12V is blue. A +5V standby rail (used when the power is off but the system can wake up) is purple. The -5V level is generally not used in modern PSUs. So the red wire provides the +5V rail.

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