Figure 3.8 Miscellaneous Configuration setup screen
CSM Configuration
Enable/disable Option ROM execution
USB Configuration
Allows users to adjust the USB configuration
–
Legacy USB Support
Enable/disable legacy USB support. The AUTO option disables legacy sup-
port if no USB devices are connected. The DISABLE option renders USB
devices only available for EFI applications.
–
XHCI Hand-Off
This is a workaround for OS without XHCI hand-off support. The XHCI own-
ership change should be claimed by the XHCI driver.
–
EHCI Hand-Off
This is a workaround for OS without EHCI hand-off support. The EHCI own-
ership change should be claimed by the EHCI driver.
–
USB Mass Storage Driver Support
Enable/disable USB mass storage driver support
–
USB Transfer Timeout
Allows users to specify the timeout value for Control, Bulk, and Interrupt
transfers. The value options available are 1, 5, 10, and 20 seconds.
–
Device Reset Timeout
Allows users to specify the USB mass storage device Start Unit Command
timeout value. The value options available are 10, 20, 30, and 40 seconds.
–
Device Power-Up Delay
Allows auto/manual configuration of the USB mass storage device Start Unit
Command timeout value.
DS-570 User Manual
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