Asus P9D-C/4L - Manual (Page 87)

ASUS P9D-C Series 4-21
4.4.6 USB Configuration
This allows you to make changes on the configuration settings of the USB.
Aptio Setup Utility - Copyright (C) 2013 American Megatrends, Inc.
Advanced
Enables Legacy USB
support. AUTO option
disables legacy
support if no USB
devices are connected.
DISABLE option will
keep USB devices
available only for
EFI applications.
USB Configuration
USB Devices
1 mouse,2 Hubs
Legacy USB Support [Enabled]
USB3.0 Support [Enabled]
XHCI Hand-off [Enabled]
EHCI Hand-off [Disabled]
USB Mass Storage Driver Support [Enabled]
Port 60/64 Emulation [Enabled]
USB hardware delays and time-outs:
USB transfer time-out [20 sec]
Device reset time-out [20 sec]
Device power-up delay [Auto]
The USB Devices item shows the auto-detected values. If no USB device is detected, the
item shows None.
Legacy USB Support [Enabled]
Allows you to enable or disable the support for legacy USB devices. Setting to �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.
Configuration options: [Disabled] [Enabled] [Auto]
USB3.0 Support [Enabled]
Enables or disables the USB3.0 (XHCI) controller support. Configuration options: [Disabled]
�Enabled�
XHCI Hand-off [Enabled]
This functions as a workaround for OSes without XHCI hand-off support. Configuration
options: �Disabled� �Enabled�
EHCI Hand-off [Enabled]
This functions as a workaround for OSes without EHCI hand-off support. Configuration
options: �Disabled� �Enabled�
USB Mass Storage Driver Support [Enabled]
This allows you to enable or disable the USB Mass Storage driver support. Configuration
options: �Disabled� �Enabled�
Port 60/64 Emulation [Enabled]
This allows you to enable the I/O port 60h/64h emulation support. This should be enabled for
the complete USB keyboard legacy support for non-USB aware OSes. Configuration options:
�Disabled� �Enabled�