IBM RT User's Setup Manual page 258

4. Connect any cables you disconnected earlier. Arrange the
cables so that you can fit the rear cover in place.
AJZIF120
After you have installed the options, it is important to record
hardware changes on the record stored in the system. Verify the
options installation by following the procedure in
Section 9, "Checking Out the Option Installation" on page 9-1.
If you need to set up the system, go to the check list in Section 1 of
for instructions to continue the
IBM R T PC User Setup Guide
setup process.
Section 3. Installing Adapters in All Models 3-17