IBM RT PC Options Installation page 33

TNL SN20-9864 (May 1987) to 75X0217
Recording Adapter Positions
Look at the applicable system unit diagram and at the list of the adapters
you bought. Decide where you can install the adapters, and write the
adapter names on the appropriate system unit diagram.
Note: The positions of the components and modules on the adapters and
drives may vary slightly from the drawings shown in this book, depending
on the manufacturer. However, the options function in the same way, and
you should install them as shown in this book.
1-18 Options Installation