Select whether or not USB connections are supported:
Enable: Enables support for USB connections by keeping a device’s USB bus active. You can then enable or disable access for groups of USB devices or individual devices.
Disable: Disables support for USB connections by deactivating a device’s USB bus. All USB devices (keyboards, mice, storage devices, and so forth) are disabled. If you select this option, the remaining options (Default Device Access, Device Group Access Settings, and USB Device Access Settings) do not apply and are disabled.
Inherit: If the policy’s Inherit from Policy Hierarchy setting is enabled, inherits this setting from other USB Connectivity policies assigned higher in the policy hierarchy. For example, if you assign this policy to a user, the setting is inherited from any USB Connectivity policies assigned to the user’s groups, folders, or zone.