Chapter 4 – DFI BT9A3 User Manual
Page 31
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Chapter 4 BIOS Setup
31
Chapter 4
CSM Configuration
This section configures the CSM settings.
Aptio Setup Utility - Copyright (C) 2013 American Megatrends, Inc.
Version 2.16.1242. Copyright (C) 2013 American Megatrends, Inc.
Compatibility Support Module Confi guration
CSM Support
CSM16 Module Version
Boot option fi lter
Option ROM execution order
Network
Storage
Video
Other PCI devices
Advanced
[Enabled]
07.71
[UEFI and Legacy]
[Do not launch]
[Legacy only]
[Legacy only]
[UEFI only]
Select Screen
Select Item
Enter: Select
+/-: Change Opt.
F1: General Help
F2: Previous
Values
F3: Optimized
Defaults
F4: Save & Reset
ESC: Exit
Enable/Disable CSM
support
CSM Support
This field is used to enable or disable the CSM support.
Boot option filter
This option controls Legacy/UEFI ROMs priority.
Network
This field controls the execution of UEFI and Legacy PXE OpROM.
Storage
This field controls the execution of UEFI and Legacy Storage OpROM.
Video
This field controls the execution of UEFI and Legacy Video OpROM.
Other PCI devices
This field determines OpROM execution policy for devices other than network, storage
or video.
USB Configuration
This section is used to configure parameters of the USB device.
Legacy USB Support
Enabled
Enable legacy USB.
Auto
Disable support for legacy when no USB devices are connected.
Disabled
Keep USB devices available only for EFI applications.
XHCI Hand-off
This is a workaround for OSes without the XHCI hand-off support. The change of
XHCI ownership should be claimed by the EHCI driver.
EHCI Hand-off
This is a workaround for OSes without the EHCI hand-off support. The change of
EHCI ownership should be claimed by the EHCI driver.
USB Mass Storage Driver Support
Enable or disable the support of the USB Mass Storage Driver.
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) 2013 American Megatrends, Inc.
Version 2.16.1242 Copyright (C) 2013 American Megatrends, Inc.
USB Confi guration
USB Module Version
USB Devices:
1 Keyboard, 1 Mouse, 1 Hub
Legacy USB Support
XHCI Hand-off
EHCI Hand-off
USB Mass Storage Driver Support
Advanced
8.11.01
[Enabled]
[Enabled]
[Enabled]
[Enabled]
Select Screen
Select Item
Enter: Select
+/-: Change Opt.
F1: General Help
F2: Previous
Values
F3: Optimized
Defaults
F4: Save & Reset
ESC: Exit