CompTIA A+ 220-901 – Q497

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

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