What voltage is typically delivered for motherboard components from power supplies?

What voltage is typically delivered for motherboard components from power supplies?

• A. 3.3 volts
• B. 5 volts
• C. 12 volts
• D. 1.2 volts

Answer: (B)

The voltage that is typically delivered for motherboard components from power supplies is 5 volts. This voltage is commonly used to power various components interconnected through the motherboard, including USB ports, low-power devices like certain sensors, and other circuitry that requires a stable power supply. The 5-volt line is part of the standardized ATX power supply specifications, which define the voltages that power supplies must provide to support system operations. This voltage is particularly useful because it strikes a balance between sufficient power for devices while keeping heat generation manageable. While other voltages, such as 3.3 volts and 12 volts, are also critical in the functioning of computers—3.3 volts is commonly used for logic circuits and communications, and 12 volts is primarily used for powering motors and high-performance components—the predominant voltage utilized for motherboard components and general operations is indeed 5 volts.

The voltage that is typically delivered for motherboard components from power supplies is 5 volts. This voltage is commonly used to power various components interconnected through the motherboard, including USB ports, low-power devices like certain sensors, and other circuitry that requires a stable power supply.

The 5-volt line is part of the standardized ATX power supply specifications, which define the voltages that power supplies must provide to support system operations. This voltage is particularly useful because it strikes a balance between sufficient power for devices while keeping heat generation manageable.

While other voltages, such as 3.3 volts and 12 volts, are also critical in the functioning of computers—3.3 volts is commonly used for logic circuits and communications, and 12 volts is primarily used for powering motors and high-performance components—the predominant voltage utilized for motherboard components and general operations is indeed 5 volts.