Proface PS4800 - 19 Panel PC" - Manual (Page 69)

PS-4700 Series (Atom Z510 Pre-installed Model) User Manual
69
USB Configuration Submenu
The following table gives the USB configuration setting options:
BIOS Setting Description Setting Options Effect
USB Legacy You can enable/disable Legacy USB
support here. USB ports do not function
during startup. USB is supported again after
the operating system has started. USB
keyboard is still recognized during the
POST. Enabled Enables this function.
Disabled
Disables this function
(1)
.
EHCI 1 You can set up support for the operating
system without the fully automatic EHCI
function. Enabled Enables USB support.
USB 2.0 support is enabled as
soon as a USB 2.0 device is
connected to the interface.
Disabled Disables USB 2.0 support.
UHCI 1 Configuration of the USB UHCI controller 1
for USB port 2 and 3. Enabled Enables USB support.
Disabled
Deactivates the USB support
(2)
.
UHCI 2 UHCI 2 is not currently in use. Enabled –
Disabled –
UHCI 3 Configuration of the USB UHCI controller 3
for USB port 3. Enabled Enables USB support.
Disabled Deactivates the USB support.
USB Client Setting for USB Client support. Enabled Enables USB Client support.
Disabled Disables USB Client support.
(1) USB Legacy Support must be left enabled or else it will no longer be possible to enter BIOS. However, if USB
Legacy Support has been disabled, then you can use the Backup BIOS to once again enter BIOS.
(2) If this setting is Disabled, then the settings UHCI 2 and UHCI 3 will be set to disabled and all USB ports will be
disabled. As a result, it will no longer be possible to enter BIOS. However, if UHCI 1 has been disabled, then you
can use the Backup BIOS to once again enter BIOS.