Usb Configuration - ASROCK IMB-1211-D User Manual

3.3.7 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 four
options:
[Enabled] - Enables support for legacy USB.
[UEFI Setup Only] - USB devices are allowed to use only under UEFI
setup and Windows / Linux OS.
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