Which two pieces of information are needed before selecting a power supply? (Choose two.)

Which two pieces of information are needed before selecting a power supply? (Choose two.)

• the voltage requirements of peripheral devices
• the installed operating system
• the form factor of the case
• the total wattage of all components
• the type of CPU

Explanation: When building a computer, select a power supply with sufficient wattage to power all the components. Each component inside the computer uses a certain amount of power. Obtain the wattage information for the components from the manufacturer documentation. When deciding on a power supply, make sure to choose a power supply that has more than enough power for the current components.
The shape of the computer case is usually determined by the motherboard, power supply, and other internal components.

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