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Step 12. Connect the Serial and Parallel Devices
If you have a remote ASCII terminal, connect it through an external modem to serial connector S1, and
connect a local ASCII terminal to serial port 2 connector S2.
If you have a local ASCII terminal or a single serial device, connect it to the serial connector S1.
If you have additional serial devices to connect, you can connect additional serial devices to the two
remaining serial ports (S3 and S4) that are located at the rear of the system.
If you have a parallel device (such as a printer), connect it to the parallel connector.
The following are examples of serial port usage. All of the serial ports are located on the rear of the
system.
Serial Port Number
Serial Port 1
Serial Port 2
Serial Port 3
Serial Port 4
Note: Do not use serial port 1 to run HACMP or attach a UPS. If you are configuring your system to run
HACMP with a UPS attached, you must connect the HACMP cable to serial port 3 and the UPS
cable to serial port 4. Do not run a UPS connected to serial port 2.
If you decide to disconnect HACMP, you must reset the service processor using the pinhole reset
switch before running another application. The service processor pinhole reset switch is located on
the operator panel.
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Eserver pSeries 650 Installation Guide
2
1 Serial Port 1 Connector
2 Serial Port 2 Connector
3 Serial Port 3 Connector
4 Serial Port 4 Connector
Applicable Usage Examples
Service Agent, PDA system management applications (for example: handheld devices,
laptop systems), Service Processor menus
Service Processor menus, Service Agent, PDA system management applications
(interface cable required)
Service Processor menus, HACMP
HACMP, UPS, and modems
4
1
3
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