Avalue Technology EMX-QM67 User Manual page 68

EMX-QM67 User's Manual

Legacy USB Support [Enabled]
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.
Configuration options: [Enabled] [Disabled][Auto]

EHCI Hand-off [Disable]
This is a workaround for OSes without EHCI hand-off support. The EHCI ownership change
should be claimed by EHCI driver.
Configuration options: [Disabled] [Enabled]

Port 60/64 Emulation [Enabled]
Enables I/O port 60h/64h emulation support. This should be enabled for complete USB
keyboard legacy support for non-USB aware OSes.
Configuration options: [Disabled] [Enabled]
USB hardware delays and time-outs:

USB transfer time-out [20 sec]
The time-out value for Control, Bulk, and Interrupt transfers.
Configuration options: [1 sec] [5 sec] [10 sec] [20 sec]

Device reset time-out [20 sec]
USB mass storage device Start Unit command time-out.
Configuration options: [10 sec] [20 sec] [30 sec] [40 sec]

Device Power-up delay [Auto]
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.
Configuration options: [Auto][Manual]
68 EMX-QM67 User‟s Manual