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BIOS Setup
22
MBN500 Series User’s Manual
USB Configuration
Aptio Setup Utility
– Copyright © 2015 American Megatrends, Inc.
Main
Advanced
Chipset
Boot
Security
Save & Exit
USB Configuration
→ ←
Select Screen
↑↓
Select Item
Enter: Select
+- Change Field
F1: General Help
F2: Previous Values
F3: Optimized Default
F4: Save
ESC: Exit
USB module Version
8.10.33
USB Devices:
1 Keyboard, 2Hubs
Legacy USB Support
[Enabled]
XHCI Hand-off
[Enabled]
EHCI Hand-off
[Enabled]
USB Mass Storage Driver Support
[Enabled]
USB hardware delays and time-outs:
USB transfer time-out
[20 sec]
Device reset tine-out
[20 sec]
Device power-up delay
Auto
Legacy USB Support
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.
XHCI Hand-off
This is a workaround for OSes without XHCI hand-off support. The
XHCI ownership change should be claimed by XHCI driver.
EHCI Hand-off
This is a workaround for OSes without EHCI hand-off support. The
EHCI ownership change should be claimed by EHCI driver.
USB MASS Storage Driver Support
Enable/Disable USB Mass Storage Driver Support.
USB Transfer time-out
The time-out value for Control, Bulk, and Interrupt transfers.
Device reset time-out
USB mass storage device start unit command time-out.