Siemens SIMATIC PANEL PC 877 - Manual (Page 211)

Detailed descriptions
17.1 Motherboard
SIMATIC Panel PC 877
Operating instructions, Release 07/2006, A5E00877780-01
17-19
Interface Position Connector Description
On / Off switch Internal X53 Switches off the power supply on the
secondary side, the AUX voltage is
not switched off.
LVDS channel 1 Internal X300 LVDS display interface for 12 to 19"
fronts
LVDS channel 2 Internal X310 Expansion of the LVDS display
interface X300 for dual-channel LVDS
displays (resolution 1280 x 1024)
I/O interface for front
components
Internal X44
USB interface Internal X2033
USB interface for front
components
Internal X2034 USB interface (front USB channels 3
and 5)