Xhci Mode; Audio Controller; Init Display First - Gigabyte GA-B75-DS3V User Manual

& XHCI Mode
Allows you to determine the operating mode for the xHCI controller in OS.
Smart Auto This mode is available only when the BIOS supports the xHCI controller in the pre-
boot environment. This mode is similar to Auto, but it adds the capability to route the
ports to xHCI or EHCI according to setting used in previous boots (for non-G3 boot)
in the pre-boot environment. This allows the use of USB 3.0 devices prior to OS boot.
xHCI controller enabling and rerouting should follow the steps in Auto, when previ-
ous boot routs ports to EHCI. Note: This is the recommended mode when BIOS has
xHCI pre-boot support. (Default)
BIOS routes the sharable ports to EHCI controller. Then it uses ACPI protocols to
Auto
provide an option to enable the xHCI controller and reroute the sharable ports. Note:
This is the recommended mode when BIOS does NOT have xHCI pre-boot support.
All shared ports are eventually routed to the xHCI controller during the BIOS boot
Enabled
process. If BIOS does not have pre-boot support for the xHCI controller, it should
initially route the sharable ports to the EHCI controller and then prior to OS boot it
should route the ports to xHCI controller. Note: OS has to provide support for the
xHCI controller in this mode. If the OS does not provide support, all sharable ports
won't work.
The USB 3.0 ports are routed to the EHCI controller and the xHCI controller is turned
Disabled
off. All USB 3.0 devices function as High Speed devices regardless of xHCI software
support/availability.
Allows you to determine whether to rout the USB 3.0 ports to the xHCI or EHCI
Manual
controller before booting to OS, and also provides you with options to manually rout
each USB 3.0/2.0 port to xHCI or EHCI.
& HS Port #1 Switchable~HS Port #4 Switchable
Corresponding USB 3.0 port is routed to xHCI. The USB 3.0 device attached on this
Enabled
port with Super-Speed capability is visible to xHCI controller. (Default)
Corresponding USB 3.0 port is routed to EHCI. The USB 3.0 device attached on this
Disabled
port with Super-Speed capability will function as High-Speed.
& xHCI Streams
Enables or disables multi-stream data transfer. Note: For Windows 7 USB 3.0 Streams support, devices
may require UASP class driver updates from UASP driver vendors to be fully compatible with Intel USB 3.0
Streams Support. (Default: Enabled)
& USB2.0 Controller
Enables or disables the integrated USB 2.0/1.1 controller. (Default: Enabled)
& Audio Controller
Enables or disables the onboard audio function. (Default: Enabled)
If you wish to install a 3rd party add-in audio card instead of using the onboard audio, set this item to
Disabled.
& Init Display First
Specifies the first initiation of the monitor display from the installed PCI graphics card, PCI Express
graphics card or the onboard graphics.
Lets BIOS automatically configure this setting. (Default)
Auto
Sets the onboard graphics as the first display.
IGFX
Sets the PCI Express graphics card on the PCIEX slot as the first display.
PEG
Sets the graphics card on the PCI slot as the first display.
PCI
& Internal Graphics
Enables or disables the onboard graphics function. (Default: Auto)
& Internal Graphics Memory Size
Allows you to set the onboard graphics memory size. Options are: 32M~1024M. (Default: 64M)
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