What can USB Permissions in the BIOS control?

USB Permissions in the BIOS primarily control USB port functionality. This means that the BIOS settings can enable or disable the operation of USB ports on a computer, which impacts whether the operating system can recognize and interact with USB devices connected to those ports.

By managing these settings, administrators can restrict or allow the use of USB devices for various reasons, such as security concerns or to prevent unauthorized data transfer. For example, if USB ports are disabled in the BIOS, no USB devices will function, regardless of the operating system settings or user permissions.

The other options do not precisely align with the direct control that BIOS has over USB functionality. While external drives may be affected by USB permissions, the primary focus of BIOS settings is to manage the basic functions of USB ports themselves rather than just controlling accessibility. Network connectivity through USB is more related to how the operating system handles network devices, and compatibility with mobile devices depends on the drivers and software managed at the operating system level, rather than the BIOS settings.