EPOX ADE-9040, User Manual

Page: 41 / 55

ADE-9040 User’s Manual
41 / 55
4.1.2.9 USB Configuration
4.1.2.9.1 Legacy USB Support
Legacy USB Support refers to the USB mouse and USB keyboard support. Normally if this
option is not enabled, any attached USB mouse or USB 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 USB keyboard can
control the system even when there is no USB drivers loaded on the system. Set this value
to enable or disable the Legacy USB Support. The Optimal and Fail-Safe default setting is
Disabled .
4.1.2.9.2 Port 64/60 Emulation
Enables I/O port 60h/64h emulation support. This should be enabled for the complete
USB keyboard legacy support for non-USB aware OSes.
4.1.2.9.3 USB 2.0 Controller Mode
Configures the USB 2.0 controller in HiSpeed (480Mbps) or FullSpeed (12Mbps).
4.1.2.9.4 BIOS EHCI Hand-Off
This is a workaround for OSes without EHCI hand-off support. The EHCI ownership change
should claim by EHCI driver.