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Q7-974
Q7-974 User Manual - Rev. First Edition: 0.1 - Last Edition: 2.3 - Author: S.B. - Reviewed by G.G. Copyright © 2017 SECO S.r.l.
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4.3.3
USB configuration submenu
Menu Item
Options
Description
USB BIOS Support
Disabled / Enabled / UEFI Only
Sets the support for USB keyboard / mouse / storage under UEFI and DOS environment. When set to
UEFI only, then it will support exclusively UEFI environment.
xHCI Mode
Disabled
Enabled
Auto
Smart Auto
Best Auto
Mode of operation of xHCI controller
Disabled: USB 3.0 functionalities are always disabled, USB 3.0 devices will work in High Speed Mode
Enabled: USB 3.0 functionalities are available both in BIOS and in OS (also for booting, provided that the
xHCI driver is installed).
Auto: USB 3.0 devices will work only when OS has started, provided that hcSwitch and xHCI drivers are
installed. In BIOS and during boot USB 3.0 devices will work in High Speed mode
Smart Auto: when starting from a Mechanical Off (G3) state, USB 3.0 functionalities are available both in
BIOS and in OS (also for booting, provided that the hcSwitch and xHCI driver is installed). When the system
boots from a different ACPI state, USB 3.0 devices will be managed by xHCI or EHCI controller depending
on the last used configuration.
Best Auto: always route to xHCI
Win7 Uninstall xHCI driver
workaround
Disabled / Enabled
Enable / Disable Windows 7 Uninstall xHCI driver workaround. When enabled, Windows 7 USB (EHCI
mode) will still work after uninstalling xHCI driver, but the WHCK test will fail
xHCI Controller
Disabled / Enabled
Enable/Disable xHCI Controller for USB 3.0 functionalities support
USB2 Link Power Management
Disabled / Enabled
Can be changed only when
“
xHCI Controller
”
Is Enabled
Enable/Disable the USB2 Link Power Management, i.e. the management of different Link Power (Lx) States
of connected USB devices depending on the workload of the device itself.
xHCI Streams
Disabled / Enabled
Can be changed only when
“
xHCI Controller
”
Is Enabled
Enable/Disable the xHCI Stream Support.
EHCI Controller
Disabled / Enabled
Controls the USB EHCI (USB 2.0) functionalities. One EHCI controller must always be enabled.
USB EHCI debug
Disabled / Enabled
Can be changed only when
“
EHCI Controller
”
Is Enabled
Enable / Disable PCH EHCI debug capability
USB Per-Port Control
Disabled / Enabled
Allows to enable / disable singularly each of USB ports #0 ÷ #3
USB Port #0 / USB Port #1 /
USB Port #2 / USB Port #3
Disabled / Enabled
Available only when
“
USB Per-Port Control
”
is Enabled.
Allows to enable / disable individually each USB port
USB Ignore Settings
See Submenu
Allows excluding BIOS support for single USB Devices/Ports/Hosts.