Ibm Rt Pc 5080 Peripheral Attachment Adapter - IBM RT User's Setup Manual

IB M RT PC 5080 P e r i p h e r a l A t t a c h m e n t A d a p t e r
You can install one RT PC 5080 Peripheral Attachment Adapter in
each system unit.
Any combination of the two types of asynchronous 4-port adapters
can be installed together with the RT PC 5080 Peripheral
Attachment adapter for a total of four adapters in the IBM 6150
and three in IBM 6151 system units.
Use of the IBM 5080 Peripheral Attachment Adapter limits the
maximum number of 8-port asynchronous adapters to four in the
IBM 6150 and two in the IBM 6151.
Section 8. Additional Options 8-7