DFI CD9A3 series - Manual (Page 29)

www.dfi .com Chapter 4 BIOS Setup
29
Chapter 4
USB Configuration
This section is used to configure USB parameters.
Legacy USB Support
Enabled
Enables legacy USB.
Auto
Disables support for legacy when no USB devices are connected.
Disabled
Keeps USB devices available only for EFI applications.
EHCI Hand-off
This is a workaround for OSes that does not support EHCI hand-off. The EHCI
ownership change should be claimed by the EHCI driver.
Port 60/64 Emulation
Enables I/O port 60h/64h emulation support. This should be enabled for the
complete keyboard legacy support for non-USB aware OSes.
Enables Legacy USB
support. AUTO option
disables legacy support if
no USB devices are
connected. DISABLE
option will keep USB
devices available only for
EFI applications.
Aptio Setup Utility - Copyright (C) 2011 American Megatrends, Inc.
Version 2.14.1219. Copyright (C) 2011 American Megatrends, Inc.
USB Confi guration
USB Devices:
1 Keyboard
Legacy USB Support
EHCI Hand-off
Port 60/64 Emulation
Advanced
[Enabled]
[Disabled]
[Enabled]
 Select Screen
 Select Item
Enter: Select
+/-: Change Opt.
F1: General Help
F2: Previous
Values
F3: Optimized Defaults
F4: Save & Reset
ESC: Exit
PPM Configuration
This section is used to configure PPM parameters.
Enable/Disable Intel
SpeedStep
Aptio Setup Utility - Copyright (C) 2011 American Megatrends, Inc.
Version 2.14.1219. Copyright (C) 2011 American Megatrends, Inc.
PPM Confi guration
EIST
Advanced
[Disabled]
 Select Screen
 Select Item
Enter: Select
+/-: Change Opt.
F1: General Help
F2: Previous
Values
F3: Optimized Defaults
F4: Save & Reset
ESC: Exit
EIST
This field is used to enable or disable the Intel Enhanced SpeedStep Technology.