Xhci Mode; Audio Controller - Gigabyte GA-B75M-D3P User Manual

AHCI C onfigures the SATA controller to AHCI mode. Advanced Host Controller Interface
(AHCI) is an interface specification that allows the storage driver to enable advanced
Serial ATA features such as Native Command Queuing and hot plug.
& xHCI Pre-Boot Driver
Enabled T he USB 3.0 ports are routed to the xHCI controller before booting to OS. (Default)
The USB 3.0 ports are routed to the EHCI controller before booting to OS.
Disabled
When this item is set to Enabled, the xHCI Mode below will be automatically set to Smart Auto; when this
item is set to Disabled, the xHCI Mode below will be automatically set to Auto.
& 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 previous 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 process.
Enabled
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. If this item is set to Disabled, the HS Port #1/2/3/4 Switchable
and xHCI Streams items below will become unconfigurable.
& 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 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.
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