Siemens SIMATIC PANEL PC 877 - Manual (Page 63)

Commissioning
8.5 BIOS settings
SIMATIC Panel PC 877
Operating instructions, Release 07/2006, A5E00877780-01
8-9
8.5
8.5
BIOS settings
A USB keyboard is not fully available before Windows starts up. There are not restrictions to
using a USB keyboard when editing the BIOS. To be able to select a boot menu before
Windows starts, however, connect a PS/2 keyboard.
Caution
Activate the "USB legacy Keyboard/Mouse" feature only when a USB keyboard or mouse is
connected. A requirement for activation is that "USB BOOT" has been selected in
the BIOS.
Note
To edit the BIOS on the operator device with a touchscreen, connect a USB keyboard or an
external PS/2 keyboard.