Kontron KTQ67/Flex - Advanced - USB Configuration

KTQ67 Users Guide
KTD-N0829-D Page 84
9.5.8 Advanced - USB Configuration
Aptio Setup Utility – Copyright © 2011 American Megatrends, Inc.
Advanced
USB Configuration
USB Devices:
2 Hubs
Legacy USB Support
EHCI Hand-off
USB Hardware delays and time-outs:
USB transfer time-out
Device reset time-out
Device power-up delay
[Enabled]
[Disabled]
[20 sec]
[20 sec]
[Auto]
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.
→← : Select Screen
↑↓ : Select Item
Enter: Select
+/- : Change Opt.
F1: General Help
F2: Previous Values
F3: Optimized Defaults
F4: Save & Exit
ESC: Exit
Version 2.11.1210. Copyright © 2011 American Megatrends, Inc
Function Selection Description
Legacy USB Support
Enabled
Disabled
Auto
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.
EHCI Hand-off
Disabled
Enabled
This is a workaround for OSes without EHCI
hand-off support. The EHCI ownership
change should be claimed by EHCI driver.
USB transfer time-out
1 sec
5 sec
10 sec
20 sec
The time-out value for Control, Bulk, and
Interrupt transfers.
Device reset time-out
10 sec
20 sec
30 sec
40 sec
USB mass storage device Start Unit
command time-out.
Device power-up delay
Auto
Manual
Maximum time the device will take before it
properly reports itself to the Host Controller.
‘Auto’ uses default value: for a Root port it is
100 ms, for a Hub port the delay is taken
from Hub descriptor.
BIOS - Advanced