ADLINK Express-LPC - Manual (Page 51)

Page 51 Express-IA533 User’s Manual Page 51 Express-IA533 User’s Manual Express-LPC User’s Manual Page 51
USB Function
Set this value to allow the system to Disable, Enable, and select a set number of onboard USB ports.
USB 2.0 Controller
Depends on the setting of USB Function. If USB Function is set to Disabled, this option will have
no effect. Enabled will open USB 2.0 functionality to all USB ports.
USB 2.0 Controller Mode
The USB 2.0 Controller Mode configures the data rate of the USB port. The options are
FullSpeed (12 Mbps) and HiSpeed (480 Mbps).
Legacy USB Support
Legacy USB Support refers to USB mouse and keyboard support. Normally if this option is
not enabled, any attached USB mouse or keyboard will 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 keyboard can control the system even when there are
no USB drivers loaded on the system. Set this value to enable or disable the Legacy USB
Support (see below).
Option Description
Disabled Set this value to prevent the use of any USB device in DOS or during system boot.
Enabled Set this value to allow the use of USB devices during boot and while using DOS.
Auto
This option auto detects USB Keyboards or Mice and if found, allows them to be utilized during boot
and while using DOS.
USB Beep Message
Allows you to Enable/Disable the beep during USB device enumeration.
BIOS EHCI hand-off
This option provides a work around for OSes without ECHI hand-off support. The EHCI
ownership change should be claimed by the EHCI driver.