Asus RAMPAGE V EXTREME U3.1 User Guide - Page 125
EHCI Hand-off [Disabled], USB Single Port Control [Disabled]
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EHCI Hand-off [Disabled] This item is set to [Disabled] by default for the EHCI (enhanced host controller interface) support by EHCI drivers in operating systems. [Disabled] [Enabled] Support for EHCI using the EHCI drivers for operating systems with EHCI support. Support for EHCI using the BIOS for operating systems without EHCI support. USB Single Port Control [Disabled] Allows you to enable or disable the individual USB ports. Configuration options: [Enabled] [Disabled] Refer to the Motherboard layout section for the location of the USB ports. Chapter 3 ASUS RAMPAGE V EXTREME 3-37
ASUS RAMPAGE V EXTREME
3-37
Chapter 3
EHCI Hand-off [Disabled]
This item is set to [Disabled] by default for the EHCI (enhanced host controller interface)
support by EHCI drivers in operating systems.
[Disabled]
Support for EHCI using the EHCI drivers for operating systems with EHCI
support.
[Enabled]
Support for EHCI using the BIOS for operating systems without EHCI
support.
USB Single Port Control [Disabled]
Allows you to enable or disable the individual USB ports.
Configuration options: [Enabled] [Disabled]
Refer to the Motherboard layout section for the location of the USB ports.