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8580/8590 Vehicle-Mount Computer User Manual E-13
Appendix E: BIOS
USB Configuration Sub-Menu
Legacy USB
Support
Disabled
Enabled
Auto
Legacy USB support refers to the USB key-
board, USB mouse and USB mass storage
device support.
If this option is Disabled, any attached USB
device will not become available until a USB
compatible operating system is booted. How-
ever, legacy support for USB keyboard will be
present during POST.
When this option is Enabled, those USB devices
can control the system even when there is no
USB driver loaded.
AUTO disables legacy support if no USB
devices are connected.
USB Keyboard
Legacy Support
Disabled
Enabled
Enable/Disable USB keyboard legacy support.
NOTE: This option has to be used with caution.
If the system is equipped with USB keyboard
only then the user cannot enter setup to enable
the option back.
USB Mouse
Legacy Support
Disabled
Enabled
Enable/Disable USB mouse legacy support.
USB Storage
Device Support
Disabled
Enabled
Enable/Disable USB mass storage device sup-
port.
Port 64/60 Emula-
tion
Disabled
Enabled
Enable/Disable the “Port 6h/64h” trapping
option. Port 60h/64h trapping allows the BIOS
to provide full PS/2 based legacy support for
USB keyboard and mouse. It provides the PS/2
functions like keyboard lock, password setting,
scan code selection etc. to USB keyboards.
USB 2.0 Control-
ler Mode
Full speed
Hi-speed
Configures the USB 2.0 host controller in hi-
speed (480Mbps) or full speed (12Mbps).
BIOS EHCI
Hand-Off
Disabled
Enabled
Enable workaround for OSes without EHCI
hand-off support.
USB Beep
Message
Disabled
Enabled
Enable/Disable the beep during USB device
enumeration.
Feature Options Description