ASRock FM2A75M-ITX User Manual - Page 49

USB Configuration - a75

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[Enabled]. Please set this option to [Enabled] if you plan to use this motherboard to submit Windows® certification. CSM Please disable CSM when you enable Fast Boot option. The default value is [Enabled]. 3.4.6 USB Configuration USB 2.0 Controller Use this item to enable or disable the use of USB 2.0 controller. A75 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 confi guration 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 issue, 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 enable or disable legacy support for USB 3.0 devices. The default value is [Enabled]. 49

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49
[Enabled]. Please set this option to [Enabled] if you plan to use this moth-
erboard to submit Windows
®
certification.
CSM
Please disable CSM when you enable Fast Boot option. The default value
is [Enabled].
3.4.6
USB Configuration
USB 2.0 Controller
Use this item to enable or disable the use of USB 2.0 controller.
A75 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
confi guration 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 is-
sue, 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 enable or disable legacy support for USB 3.0 devices.
The default value is [Enabled].