BIOS Setup (SCU)
3.4 Advanced menu
BIOS Description
24 Operating Manual, 05/2016, A5E33664825-AB
"USB Configuration" submenu
Switches the support of USB keyboard, mouse and stor-
age media on (Enabled) or off (Disabled) in UEFI and
Enabled
UEFI Only USB keyboard, mouse and storage media are only
supported in UEFI environments.
USB Precondition Optimize USB enumeration (connection process) and reduce
connection time (Enabled) or do not optimize (Disabled).
XHCI Pre-Boot Driver Switches on (Enabled) or switches off (Disabled) compatibility mode of the
USB3 host controller for operating systems that do not support USB3.
USB 3.0 support is switched off.
USB 3.0 support is switched on.
Auto During the BIOS boot stage, USB 2.0 support only. After
the operating system has started, an OS-specific USB 3.0
driver takes over the control.
Smart Auto During the BIOS boot stage, only USB 2.0 is supported.
USB 3.0 support becomes available during the
subsequent warm restart, after the OS-specific USB 3.0
driver has re-configured the XHCI controller.
The following Setup parameter is visible if "xHCI Mode"" is Enabled or Auto:
• HS Port Switch #
2
If activated (Enabled), a USB 3 port can be forced into the high-speed
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