ADLINK ReadyBoard 740 - Manual (Page 45)

BIOS Setup 33
RB-740
X Disabled: Set this value to prevent the use of any USB
device in DOS or during system boot.
X Enabled: Set this value to allow the use of USB devices
during boot and while using DOS.
X Auto: This option auto detects USB Keyboards or Mice and
if found, allows them to be utilized during boot and while
using DOS.
Port 64/60 Emulation
This option uses USB to receive the IO port 64/60 trap to emu-
late the legacy keyboard controller.
USB 2.0 Controller Mode
The USB 2.0 Controller Mode configures the data rate of the
USB port. The options are FullSpeed (12 Mbps) and HiSpeed
(480 Mbps).
BIOS EHCI hand-off
This option provides a workaround for operating systems with-
out ECHI hand-off support. The EHCI ownership change
should claim by EHCI driver.