Ibm Rt Pc 4-Port Asynchronous Adapters - IBM RT PC Options Installation

IBM RT PC 4-Port Asynchronous Adapters

6-32 Options Installation
You can install any combination of RS232C and RS422A
Asynchronous 4-Port Adapters together with one RT PC 5080
Peripheral Adapter, for a total of four in IBM 6150 and three in IBM
6151.
Note: Buffered versions of the RS232C and RS422A 4-Port
Asynchronous Adapters can be identified by a plus symbol (+)
stamped on the end of the adapter near the cable connector. Both
buffered and non-buffered adapters can be installed in the same
system.
With the IBM RT PC 4-Port Asynchronous RS232C Adapter and the
correct cables, you can connect a system unit to printers, plotters,
terminals, or modems located up to 15.2 m (50 ft) from the system
unit.