Siemens Simatic PC Panel PC 870 - Manual (Page 35)

Release 11/02 Connecting and Switching On the Panel PC 670/870
SIMATIC Panel PC 670/870 Start-Up Instructions 2–13
BIOS settings
The Panel PC 670/870 is shipped with BIOS setting
LEGACY SUPPORT
DISABLED
. That means the full functional range of a USB keyboard is not
available during the initial boot sequence (before Windows is started). There
are no restrictions for using a USB keyboard to make changes in the BIOS
Setup. When using an operating panel with touchscreen front, changes can
only be made to the BIOS using an externally connected USB or PS/2
keyboard.
The
USB Legacy Support
is preset to
DISABLED
in the BIOS Setup under
menu item
Hardware
.
The Windows NT 4.0 USB driver extension for use of the integrated membrane
keyboard, mouse, and touchscreen has already been pre-installed.
Selection of an operating menu when starting Windows NT 4.0 is only possible
with an external PS/2 keyboard or by changing the BIOS option
USB Legacy
Support
to
ENABLED
.
Notice
If
Legacy Support
is activated in the BIOS (enabled), individual problems
may occur with specific ISA/PCI extension boards.
Power management
The default
Power Saving
setting
Disabled
must not be changed in the
BIOS setup.
Restrictions
Only applicable to Panel PC 670/870 with keypad front panels:
• The LEDs on an externally connected PS/2 keyboard have no function.
• Only external USB keyboards without integrated HUB or standard USB mice
(without special, additional functionality, e.g. wheel) are approved for
connection to the front side USB interface and the USB interface on the
computer.
Service Pack
The following Service Pack is required:
• Windows NT: Service Pack 6a
Service Pack 6a is contained with the Panel PC 670/870 supplied.
In the case of a new installation of Windows NT, the Windows NT Service Pack
must be installed before all other additional drivers. After a driver has been
installed, the Service Pack must be reinstalled.