Biostar B75MU3 Bios Manual - Page 18

USB Configuration - + drivers

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B75MU3+ UEFI BIOS Manual USB Configuration Legacy USB Support This item determines if the BIOS should provide legacy support for USB devices like the keyboard, mouse, and USB drive. This is a useful feature when using such USB devices with operating systems that do not natively support USB (e.g. Microsoft DOS or Windows NT). Options: Enabled (Default) / Disabled / Auto USB3.0 Support This item enables or disables USB3.0 (XHCI) Controller support. Options: Enabled (Default) / Disabled XHCI Hand-Off This is a workaround for OSes without XHCI hand-off support. The XHCI ownership change should be claimed by XHCI driver. Options: Enabled (Default) / Disabled EHCI Hand-Off This is a workaround for OSes without EHCI hand-off support. The EHCI ownership change should be claimed by EHCI driver. Options: Disabled (Default) / Enabled Port 60/64 Emulation This items enables I/O port 60h/64h emulation support. This should be enabled for the complete USB keyboard legacy support for non-USB aware OSes. Options: Enabled (Default) / Disabled 17

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B75MU3+ UEFI BIOS Manual
17
USB Configuration
Legacy USB Support
This item determines if the BIOS should provide legacy support for USB devices
like the keyboard, mouse, and USB drive. This is a useful feature when using such
USB devices with operating systems that do not natively support USB (e.g.
Microsoft DOS or Windows NT).
Options:
Enabled (Default) / Disabled / Auto
USB3.0 Support
This item enables or disables USB3.0 (XHCI) Controller support.
Options:
Enabled (Default) / Disabled
XHCI Hand-Off
This is a workaround for OSes without XHCI hand-off support. The XHCI
ownership change should be claimed by XHCI driver.
Options:
Enabled (Default) / Disabled
EHCI Hand-Off
This is a workaround for OSes without EHCI hand-off support. The EHCI ownership
change should be claimed by EHCI driver.
Options:
Disabled (Default) / Enabled
Port 60/64 Emulation
This items enables I/O port 60h/64h emulation support. This should be enabled for
the complete USB keyboard legacy support for non-USB aware OSes.
Options:
Enabled (Default) / Disabled