Asus M2N 1394 - Manual (Page 68)

-8 Chapter : BIOS setup
Legacy USB Support [Enabled]
Allows you to enable or disable support for USB devices on legacy operating
systems (OS). 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]
USB 2.0 Controller Mode [HiSpeed]
Allows you to configure the USB 2.0 controller in HiSpeed (480 Mbps) or Full
Speed (12 Mbps). Configuration options: [HiSpeed] [Full Speed]
BIOS EHCI Hand-off [Enabled]
Allows you to enable support for operating systems without an EHCI hand-off
feature. Configuration options: [Disabled] [Enabled]
The Module Version and USB Devices Enabled items show the
auto-detected values. If no USB device is detected, the item shows None.
2.4.6 USB Configuration
The items in this menu allows you to change the USB-related features. Select an
item then press to display the configuration options.
USB Configuration
Module Version - 2.24.0-12.4
USB Devices Enabled:
None
Legacy USB Support [Enabled]
USB 2.0 Controller Mode [HiSpeed]
BIOS EHCI Hand-Off [Enabled]
IRQ-xx assigned to [PCI Device]
When set to [PCI Device], the specific IRQ is free for use of PCI/PnP devices.
When set to [Reserved], the IRQ is reserved for legacy ISA devices. Configuration
options: [PCI Device] [Reserved]