ASROCK iBOX 1100 Series User Manual page 40

5.3.6 USB Configuration
Legacy USB Support
Use this option to select legacy support for USB devices. There are two
configuration options: [Enabled] and [UEFI Setup Only]. The default value
is [Enabled]. Please refer to below descriptions for the details of these two
options:
[Enabled] - Enables support for legacy USB.
[UEFI Setup Only] - USB devices are allowed to use only under UEFI
setup and Windows / Linux OS.
USB Power Control
Use this to control USB power. The default value is [Default Setting].
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