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IB919 Series User’s Manual
4.4.12 USB Configuration
BIOS Setting
Description
Legacy USB Support
•
Enabled
enables Legacy USB support.
•
Auto
disables legacy support if there is no
USB device connected.
•
Disabled
keeps USB devices available only
for EFI applications.
XHCI Hand-off
This is a workaround for OSes without XHCI
hand-off support. The XHCI ownership change
should be claimed by XHCI driver.
USB Mass Storage
Driver Support
Enables / Disables the support for USB mass
storage driver.
Port 60/64 Emulation
Enables / Disables the support for I/O port 60h /
64h emulation. This should be enabled for the
complete USB keyboard legacy support for
non-USB aware OSes.
USB Transfer
time-out
The time-out value (1 / 5 10 / 20 secs) for Control,
Bulk, and Interrupt transfers.
Device reset time-out
Gives seconds (10 / 20 / 30 / 40 secs) to delay
execution of Start Unit command to USB mass
storage device.
Device power-up
delay
Max.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.
Summary of Contents for IB919 Series
Page 14: ...6 IB919 Series User s Manual 1 6 Block Diagram ...
Page 17: ...General Information IB919 Series User s Manual 9 1 1 8 Dimensions ...
Page 18: ...10 IB919 Series User s Manual This page is intentionally left blank ...
Page 22: ...14 IB919 Series User s Manual 2 3 Jumper Connector Locations Board diagram of IB919 ...
Page 48: ...40 IB919 Series User s Manual This page is intentionally left blank ...
Page 66: ...58 IB919 Series User s Manual 4 4 14 NVMe Configuration ...
Page 69: ...BIOS Setup IB919 Series User s Manual 61 4 ...