SIMATIC Rack PC 840 Expansions
4-6
SIMATIC Rack PC 840 Manual
A5E00104826-03
Components on the Motherboard
The following components are located on the motherboard of the Rack PC:
Slot Interface/Port
X1 Processor socket with heat sink
X3, X4, X5 DIMM slots for memory expansion
X7 2.54 mm primary IDE
X10 2.54 mm secondary EIDE
X20 Socket connector for bus board
X22 PS/2 mouse connection
X23 PS/2 keyboard connection
X26 Connection for standard floppy
X28 Internal socket connector for COM1 (V.24/TTY) module
X29 Internal male connector for COM1 (V.24/TTY) module
X30 Serial port COM 1/TTY
X31 Serial port COM 2
X34 Internal Parallel port LPT 1
X36 USB port (2x high current USB)
X39 SCSI LED active
X41 Processor fan
X42, X43 Device fan connector
X44 I/O interface for front port connection
X50 Connection to power supply (power supply unit)
X303 VGA monitor connector
X400 PROFIBUS/MP *
X700 Ethernet
* Optional product feature
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