User manual

APC-3580 User Manual
66
Use the Legacy USB Support BIOS option to enable USB mouse and USB keyboard support.
Normally if this option is not enabled, any attached USB mouse or USB keyboard does not become
available until a USB compatible operating system is fully booted with all USB drivers loaded. When
this option is enabled, any attached USB mouse or USB keyboard can control the system even when
there is no USB driver loaded onto the system.
Disabled
Legacy USB support disabled
Enabled
DEFAULT
Legacy USB support enabled
Auto
The Legacy USB support is automatically
detected
and enabled.
USB 2.0 Controller [Enabled] Use the USB 2.0 Controller BIOS option to enable or disable the USB
2.0 controller

Enabled DEFAULT USB 2.0 controller enabled

Disabled USB 2.0 controller disabled
USB2.0 Controller Mode [HiSpeed] Use the USB2.0 Controller Mode option to set the speed of the
USB2.0 controller.

FullSpeed The controller is capable of operating at 12Mb/s

HiSpeed DEFAULT The controller is
capable of operating at 480Mb/s
BIOS EHCI Handoff [Enable]
Use the BIOS EHCI Handoff option for systems running OSes that do not have EHCI hand-off
support. The EHCI ownership change is managed by the EHCI driver.

Disabled Systems with OSes that do not support EHCI can use the
EHCI handoff functionality.

Enabled
DEFAULT Systems with OSes that do
not support EHCI cannot use the EHCI
handoff functionality.
USB Mass Storage Device Configuration
The USB Mass Storage Device Configuration field appears if a USB drive is connected to
one of the USB ports or connectors. If this option is selected a menu appears.