What can USB selective suspend do?

USB selective suspend is a power management feature that allows the operating system to suspend individual USB devices that are not currently in use, while keeping other devices active. This selective suspension helps to conserve power by disabling specific devices rather than shutting down power to all USB ports or devices connected to the system.

When a device is selectively suspended, it stops consuming power until it is needed again, at which point the operating system can reactivate it. This functionality is particularly beneficial in laptops and mobile devices where battery life is a concern.

The other choices do not accurately describe what USB selective suspend does. For example, it does not activate all USB ports, prevent devices from being detected, or speed up data transfer rates. Instead, the focus of selective suspend is specifically on managing power consumption by monitoring and controlling individual devices connected via USB.