Standby mode is a power-saving state that allows a computer to quickly resume operation while using minimal power. When a computer is in standby mode, the display is turned off, and the hard drive and other peripherals are powered down. However, the computer’s memory (RAM) remains powered, so that the computer can quickly resume operation when needed.
Standby mode is useful for conserving energy when a computer is not being used for extended periods of time. It can also be used to quickly resume operation after a power outage.