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X9SPV-M4 Motherboard User's Manual
EHCI Hand-Off
This item is for Operating Systems that do not support Enhanced Host Control-
ler Interface (EHCI) hand-off. When enabled, EHCI ownership change will be
claimed by the EHCI driver. The settings are Enabled and
Disabled
.
XHCI Pre-Boot Driver
This feature enables support for the xHCI pre-boot driver. The options are
En-
abled
and Disabled.
XHCI Mode
Use this feature to select the xHCI controller mode of operation. The options are
Smart Auto
, Auto, Enabled, and Disabled.
HS Port #1~#4 Switchable
This feature allows for HS port switching between xHCI and EHCI. When set
to Disabled, the specified port is routed to EHCI. The options are
Enabled
and
Disabled.
Note
: If HS port is routed to xHCI, the corresponding SS port is enabled.
XHCI Streams
Use this feature to enable the maximum primary stream array size for xHCI. The
options are
Enabled
and Disabled.
EHCI1, EHCI2
This feature enables the EHCI interface (USB 2.0). At least one EHCI controller
must always be enabled. The options are
Enabled
and Disabled.
USB Ports Per-Port Disable Control
If set to Enabled, this feature allows deactivation of selected USB ports. The
options are
Disabled
and Enabled. If set to Enabled, the following will appear:
USB Port #0~#13 Disable
Select which USB ports to disable. The settings are Enabled and
Dis
-
abled.
PCH Azalia Configuration
Azalia
Use this feature to control how the Azalia device is detected. If set to Auto, Azalia
will only be enabled if present. The options are Disabled,
Enabled
, and Auto. If
set to Enabled, the following option becomes available.