IBM PS/2 35 SX Hardware Maintenance Reference page 15

1.2.5 Serial Port
The serial port is fully programmable and supports asynchronous
communications. The 25-pin, D-shell connector provides the signals to
drive a device with a standard 25-contact, RS-232 connector.
connected device is identified (addressed) by the system configuration as
either Serial 1 (primary) or Serial 2 (alternate).
If an option adapter with a serial port is installed in the system, it
should be set to Serial 2.
Note: Conflicts occur when using multiple communication lines if two or
more lines are addressed the same.
Select the Set configuration option on the Starter Diskette.
Select View configuration to verify that no lines are addressed the
same.
IBM PS/2 Model 35 SX, 35 LS, 35 SLC HMR
Serial Port
¦ Copyright IBM Corp. 1991, 1992
1.2.5 - 1
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