Advantech SIMB-M21 - USB Configuration

51 SIMB-M21 User Manual
Chapter 3 BIOS Setup
3.4.9 USB Configuration
USB Configuration Parameters.
 USB Device
Display how many devices are connected.
 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 OS without EHCI hand-off support. The EHCI owner-
ship 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 com-
plete USB keyboard legacy support for non-USB aware OS.
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].