Gigabyte GA-B85-HD3 User Manual download pdf (Page 29)

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2-5 Peripherals

Init Display First

Species the rst initiation of the monitor display from the installed PCI graphics card, PCI Express

graphics card or the onboard graphics.

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IGFX Sets the onboard graphics as the rst display.

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PCIe 1 Slot Sets the graphics card on the PCIEX16 slot as the rst display. (Default)

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PCIe 2 Slot Sets the graphics card on the PCIEX4 slot as the rst display.

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PCI Sets the graphics card on the PCI slot as the rst display.

XHCI Mode

Allows you to determine the operating mode for the xHCI controller in OS.

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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)

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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.

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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.

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Gigabyte GA-B85-HD3 User Manual Page 29