CompTIA A+ Core 1 (220-1001) — Question 158

Which of the following is the main purpose of the +5VSB output of a power supply?

Answer options

• A. It allows peripherals to draw power when the machine is off
• B. It provides power to the audio and sound boards of the machine
• C. It acts as the main voltage supply to the motherboard and processor
• D. It powers all expansion cards and external device hubs

Correct answer: A

Explanation

The correct answer, A, is accurate because the +5VSB output allows peripherals to receive power even when the computer is not powered on. The other options are incorrect as they describe functions that are not associated with the +5VSB output specifically.