Asus X99-E WS/USB 3.1 Manual page 113

xHCI Hand-off [Disabled]
[Enabled]
[Disabled]
EHCI Hand-off [Disabled]
[Enabled]
[Disabled]
USB Single Port Control
This item allows you to enable or disable the individual USB ports.
ASUS X99-E WS/USB 3.1
E13611_X99-E_WS_USB31_UM_V4.indb 41
Enables the support for operating systems without an xHCI hand-off
feature.
Disables the xHCI Hand-off support.
Enables the support for operating systems without an EHCI hand-off
feature.
Disables the EHCI Hand-off support.
Refer to section 1.2.2 Motherboard layout for the location of the USB ports.
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