Kontron ETXexpress-AI - Manual (Page 96)

Kontron ETXexpress-AI User’s Guide
91
USB Configuration
Features Options Description
Legacy USB
Support Enabled
Disabled
Auto
Enable = legacy USB support.
Auto = disables legacy support
if no USB devices are connected
Disable = keep USB devices
available only for EFI
applications.
EHCI Hands-
off Disabled
Enabled
This is a workaround for OSs
without EHCI hand-off support
The EHCI ownership change should
be claimed by the EHCI driver
USB transfer
time-out 1 sec
5 sec
10 sec
20 sec The time-out value for Control,
Bulk and Interrupt transfers
USB Beep
Message Disabled
Enabled Enable/disable the beep during
USB device enumeration.
Device reset
time-out 10 sec
20 sec
30 sec
40 sec
Selects USB mass storage device
Start Unit command time-out.
Device power-
up delay Auto
Manual Maximum time the device will
take before it properly reports
itself to the host controller.
Auto = use default value: for a
Root port the delay is 100ms,
for a Hub port the delay is
taken from the Hub descriptor.