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AHCI Congures the SATA controllers to AHCI mode. Advanced Host Controller Interface
(AHCI) is an interface specication that allows the storage driver to enable advanced
Serial ATA features such as Native Command Queuing and hot plug.
xHCI Pre-Boot Driver &
Enabled The USB 3.0 ports are routed to the xHCI controller before booting to OS. (Default)
Disabled The USB 3.0 ports are routed to the EHCI controller before booting to OS.
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)
Auto BIOS routes the sharable ports to EHCI controller. Then it uses ACPI protocols to
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.
Enabled All shared ports are eventually routed to the xHCI controller during the BIOS boot 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.
Disabled The USB 3.0 ports are routed to the EHCI controller and the xHCI controller is turned
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 uncongurable.
HS Port #1 Switchable~HS Port #4 Switchable &
Enabled Corresponding USB 3.0 port is routed to xHCI. USB 3.0 device attached on port with
Super-Speed capability is visible to xHCI controller. (Default)
Disabled Corresponding USB 3.0 port is routed to EHCI. USB 3.0 device attached on port with
Super-Speed capability 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)
USB 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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