Asrock ad2550ru3s3 用户手册

下载
页码 56
43
3.3.6  USB Configuration
USB 2.0 Controller
Use this item to enable or disable the use of USB 2.0 controller.
USB 3.0 Controller
Use this item to enable or disable the use of USB 3.0 controller.
Legacy USB Support
Use this option to select legacy support for USB devices. There 
are four configuration options: [Enabled], [Auto], [Disabled] 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.
[Auto] - Enables legacy support if USB devices are connected.
[Disabled] - USB devices are not allowed to use under legacy 
OS and UEFI setup when [Disabled] is selected. If you have USB 
compatibility issues, it is recommended to select [Disabled] to 
enter OS.
[UEFI Setup Only] - USB devices are allowed to use only under 
UEFI setup and Windows / Linux OS.
Legacy USB 3.0 Support
Use this option to select legacy support for USB 3.0 devices. 
*
USB 3.0 Controller and Legacy USB 3.0 Support are designed only for 
AD2550RA/U3S3 and AD2550R/U3S3.