Dfi EC300 Series Manual de usuario Pagina 131

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131
7
BIOS Setup
USB Con guration
This section is used to con gure
USB.
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.
USB 3.0 Support
If you are using USB 3.0, this
eld must be set to Enabled.
XHCI Hand-off
This is a workaround for OSes that does not support XHCI hand-off.
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 driv
er.
USB transfer time-out
The time-out value for Bulk and Interrupt transfers.
Device reset time-out
Selects the USB mass storage device start unit command timeout.
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 Con guration
USB Devices:
1 Keyboard, 1 mouse, 2 Hubs
Legacy USB Support
USB 3.0 Support
XHCI Hand-off
EHCI Hand-off
USB hardware delays and time-outs:
USB transfer time-out
Device reset time-out
Device power-up delay
Advanced
[Enabled]
[Enabled]
[Enabled]
[Disabled]
[20 sec]
[20 sec]
[Auto]
 Select Screen
 Select Item
Enter: Select
+/
-:
Change Opt.
F1: General Help
F2: Previous Values
F3: Optimized Defaults
F4: Save & Exit
ESC: Exit
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