Asus RAMPAGE IV BLACK EDITION AC4 RAMPAGE IV BLACK EDITION User's Manual - Page 119

USB Configuration

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3.6.5 USB Configuration The items in this menu allow you to change the USB-related features. The USB Devices item shows the auto-detected values. If no USB device is detected, the item shows None. Legacy USB Support [Enabled] [Enabled] Enables the support for USB devices on legacy operating systems (OS). [Disabled] The USB devices can be used only for the BIOS setup program. It cannot be recognized in boot devices list. [Auto] Allows the system to detect the presence of USB devices at startup. If detected, the USB controller legacy mode is enabled. If no USB device is detected, the legacy USB support is disabled. Legacy USB3.0 Support [Enabled] •[Disabled] Disables the function. •[Enabled] Enables the support for USB 3.0 devices on legacy operating systems (OS). •EHCI Hand-off [Disabled] [Enabled] [Disabled] Enables the support for operating systems without an EHCI hand‑off feature. Disables the EHCI Hand-off support. USB Per Port Control Allows you to enable or disable the individual USB port. Refer to the Motherboard layout on Chapter 1 for the location of the USB ports. ASUS RAMPAGE IV BLACK EDITION 3-29 Chapter 3

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ASUS RAMPAGE IV BLACK EDITION
3-29
Chapter 3
3.6.5
USB Configuration
The items in this menu allow you to change the USB-related features.
The
USB Devices
item shows the auto-detected values. If no USB device is detected, the
item shows
None
.
Legacy USB Support [Enabled]
[Enabled]
Enables the support for USB devices on legacy operating systems (OS).
[Disabled]
The USB devices can be used only for the BIOS setup program. It cannot
be recognized in boot devices list.
[Auto]
Allows the system to detect the presence of USB devices at startup. If
detected, the USB controller legacy mode is enabled. If no USB device is
detected, the legacy USB support is disabled.
Legacy USB3.0 Support [Enabled]
[Disabled]
Disables the function.
[Enabled]
Enables the support for USB 3.0 devices on legacy operating systems
(OS).
EHCI Hand-off [Disabled]
[Enabled]
Enables the support for operating systems without an EHCI hand-off
feature.
[Disabled]
Disables the EHCI Hand-off support.
USB Per Port Control
Allows you to enable or disable the individual USB port.
Refer to
the
Motherboard layout
on
Chapter 1
for the location of the USB ports.
•
•
•