IBM 5280 User's Setup Manual page 96

For the IBM 5282, the first address on the cable label represents the diskette drive
located on the same side as the Power switch. The second address represents the
diskette drive on the opposite side from the Power switch.
First Address
,""
....
_' ...
......
_--
,
--
...
",
---------
~
-------
,
---
Example
---
----- 5000/5400
"
,"
"
"
"
"
"
"
" , Second Address
2. Look at the orange label on the diskette drive. The label
identifies the diskette drive type (1 or 20).
User's Setup Procedures 89