Avalue EPI-QM77 - Manual (Page 53)

User ’s Manual
EPI-QM77 User ’s Manual 53
3.6.2.12 USB Configuration
The USB Configuration menu helps read USB information and configures USB settings.
Item Options Description
Legacy USB Support
Enabled[Default]
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.
USB3.0 Support
Enabled[Default]
Disabled
Enable/Disable USB3.0 (XHCI) Controller
support.
XHCI Hand-off
Enabled[Default]
Disabled
This is a workaround for OSew without XHCI
hand-off support. The XHCI ownership change
should be claimed by XHCI driver.
EHCI Hand-off
Enabled
Disabled[Default]
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[Default]
The time-out value for Control, Bulk, and
Interrupt transfers.
Device reset time-out
10 sec
20 sec[Default]
30 sec
40 sec
USB mass storage device Start Unit command
time-out.
Device Power-up delay
Auto[Default]
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
100ms, for a Hub port the delay is taken form
Hub descriptor.