Asus P10S-M User Manual page 78

Legacy USB Support [Enabled]
[Disabled]
[Enabled]
[Auto]
XHCI Hand-off [Disabled]
This item is set to [Disabled] by default for the EHCI (enhanced host controller interface)
support by XHCI drivers in operating systems.
[Enabled]
[Disabled]
USB Mass Storage Driver Support [Enabled]
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]
USB hardware delays and time-outs
USB transfer time-out [20 sec]
Allows you to select the USB transfer time-out value.
Configuration options: [1 sec] [5 sec] [10 sec] [20 sec]
Device reset time-out [20 sec]
Allows you to select the USB device reset time-out value.
Configuration options: [10 sec] [20 sec] [30 sec] [40 sec]
Device power-up delay [Auto]
This allows you to set the maximum time the device will take before it properly reports itself to
the Host Controller.
Configuration options: [Auto] [Manual]
Mass Storage Devices
Allows you to select the mass storage device emulation type for devices connected.
Configuration options: [Auto] [Floppy] [Forced FDD] [Hard Disk] [CD-ROM]
4-18
The USB devices can be used only for the BIOS setup program. It cannot
be recognized in boot devices list.
Enables the support for USB devices on legacy operating systems (OS).
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.
Support XHCI by BIOS for operating systems without XHCI support.
Support XHCI by XHCI drivers for operating systems with XHCI support.
Chapter 4: BIOS Setup