ECX-BYT - User Guide, Rev. 1.0
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Figure 51: BIOS Advanced Menu - USB Configuration
BIOS SETUP UTILITY
Main
Advanced
Power
Boot
Security
Save & Exit
USB Configuration
USB Devices:
→
←
: Select Screen
1 Keyboard, 2 Hubs
↑
↓
: Select Item
Enter: Select
Legacy USB Support
[Enabled]
+/-: Change Opt.
XHCI Legacy Support
[Enabled]
F1: General Help
XHCI Hand-off
[Enabled]
F2: Previous Values
EHCI Hand-off
[Disabled]
F3: Optimized Defaults
USB Mass Storage Driver Support
[Enabled]
F4: Save & Exit
XHCI Mode
[Smart Auto]
ESC: Exit
Version 2.16.1242. Copyright (C) 2013, American Megatrends, Inc.
Feature
Option
Description
Legacy USB Support
[Enabled], [Disabled],
[Auto]
Select whether to enable or disable Legacy USB support.
AUTO option disables legacy support if no USB devices are
connected.
XHCI Legacy Support
[Disabled], [Enabled]
Select whether to enable or disable XHCI Controller Legacy
support.
XHCI Hand-off
[Enabled], [Disabled]
Select whether to enable or disable XHCI Hand-off function.
This is a workaround for OSes without XHCI hand-off support.
The XHCI ownership change should be claimed by XHCI driver.
EHCI Hand-off
[Disabled], [Enabled]
Select whether to enable or disable EHCI Hand-off function.
USB Mass Storage
Driver Support
[Disabled], [Enabled]
Select whether to enable or disable USB Mass Storage Driver
Support.
XHCI Mode
[Smart Auto],
[Enabled]
Determine the operating mode of the XHCI controller in OS.