ASUS RS704DA-E6/PS4 用户手册

5-24

Chapter 5: BIOS setup

The items in this menu allows you to change the USB-related features. Select an 

item then press <Enter> to display the configuration options.

Allows you to enable or disable support for legacy USB devices. Setting to [Auto] 

allows the system to detect the presence of USB devices at startup. If detected, the 

USB controller legacy mode is enabled. If no USB device is detected, the legacy 

USB support is disabled. Configuration options: [Disabled] [Enabled] [Auto]

The following item appears only when you set Legacy USB Support to 

[Enabled].

Allows you to set the USB 2.0 controller to HiSpeed (480Mbps) or FullSpeed 

(12Mbps). Configuration options: [FullSpeed] [HiSpeed]

Enables or disables the BIOS EHCI hand-off support. 

Configuration options: [Disabled] [Enabled]

Enables or disables the legacy USB1.1 HC support. 

Configuration options: [Disabled] [Enabled]