Siemens SIMATIC RI 45 PIII Series Manual page 38

Motherboard
Special
Connector
X630 intern
X160 intern
X414 intern
X503 intern
X504 intern
X161 intern
S2 switch 2
2-10
Connector for CD-ROM-Line output in RI 45 PIII Tower
Reset key, speaker, status display, power supply. front electronics,
Connector for standby/operation mode switch
10 pin socket connector for RS485 hybrid of the MPI/DP interface
10 pin plug connector for RS485 hybrid of the MPI/DP interface
4 pin plug connector for SCSI-active LED connector for a SCSI-module
CPU clock, flash EPROM, TTY interface
RI 45 PIII, Manual
C79000-G7076-C817-01