Manual

ASUS M2A-MX 2-27
USB Controllers [Enabled]
Allows you to enable or disable the USB Controllers.
Conguration options: [Enabled] [Disabled]
Legacy USB Support [Auto]
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.
Conguration options: [Disabled] [Enabled] [Auto]
USB 2.0 Controller Mode [HiSpeed]
Allows you to congure the USB 2.0 controller in HiSpeed (480 Mbps) or Full
Speed (12 Mbps). Conguration options: [FullSpeed] [HiSpeed]
BIOS EHCI Hand-Off [Enabled]
Allows you to enable or disable BIOS EHCI Hand-Off. This is a workaround for OS
without EHCI hand-off support. The EHCI ownership change should be claimed by
EHCI driver. Conguration 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 Conguration
The items in this menu allows you to change the USB-related features. Select an
item then press <Enter> to display the conguration options.
IRQ-xx assigned to [PCI Device]
When set to [PCI Device], the specic IRQ is free for use of PCI/PnP devices.
When set to [Reserved], the IRQ is reserved for legacy ISA devices.
Conguration options: [PCI Device] [Reserved]
USB Conguration
Module Version - 2.24.1-11.4
USB Devices Enabled:
None
USB Controllers [Enabled]
Legacy USB Support [Auto]
USB 2.0 Controller Mode [HiSpeed]
BIOS EHCI Hand-Off [Enabled]
USB Mass Storage Device Conguration
Options
Disabled
Enabled