IBASE SI-38 - Manual (Page 29)

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USB Configuration
Aptio Setup Utility
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 Devices:
1 Keyboard, 1 Mouse
Legacy USB Support Enabled
USB3.0 Support Enabled
XHCI Hand-off Enabled
EHCI Hand-off 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 keeps USB devices available only for EFI applications.
USB3.0 Support
Enable/Disable USB3.0 (XHCI) Controller support.
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
Enabled/Disabled. 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
The time-out value for Control, Bulk, and Interrupt transfers.
Device reset time-out
USB mass Storage device start Unit command time-out.
Device power-up delay
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 100ms, for a Hub port the
delay is taken from Hub descriptor.