Use the following table to convert the RIO/HSL12X loop number to port location labels.

| Loop number (hex / dec) | Model | FRU position | RIO/HSL/12X port labels on system unit or processor tower |
|---|---|---|---|
| 0686 / 1670 | MMA primary unit | -P1-C8 | -P1-C8-T1
-P1-C8-T2 |
| 0688 / 1672 | MMA primary unit | -P1-C9 | -P1-C9-T1
-P1-C9-T2 |
| 0696 / 1686 | MMA first secondary unit | -P1-C8 | -P1-C8-T1
-P1-C8-T2 |
| 0698 / 1688 | MMA first secondary unit | -P1-C9 | -P1-C9-T1
-P1-C9-T2 |
| 06A6 / 1702 | MMA second secondary unit | -P1-C8 | -P1-C8-T1
-P1-C8-T2 |
| 06A8 / 1704 | MMA second secondary unit | -P1-C9 | -P1-C9-T1
-P1-C9-T2 |
| 06B6 / 1718 | MMA third secondary unit | -P1-C8 | -P1-C8-T1
-P1-C8-T2 |
| 06B8 / 1720 | MMA third secondary unit | -P1-C9 | -P1-C9-T1
-P1-C9-T2 |
| 0781 / 1921 | MMA primary unit | -P1-C8 | -P1-C8-T1
-P1-C8-T2 |
| 0782 / 1922 | MMA primary unit | -P1-C9 | -P1-C9-T1
-P1-C9-T2 |
| 0789 / 1929 | MMA first secondary unit | -P1-C8 | -P1-C8-T1
-P1-C8-T2 |
| 078A / 1930 | MMA first secondary unit | -P1-C9 | -P1-C9-T1
-P1-C9-T2 |
| 0791 / 1937 | MMA second secondary unit | -P1-C8 | -P1-C8-T1
-P1-C8-T2 |
| 0792 / 1938 | MMA second secondary unit | -P1-C9 | -P1-C9-T1
-P1-C9-T2 |
| 0799 / 1945 | MMA third secondary unit | -P1-C8 | -P1-C8-T1
-P1-C8-T2 |
| 079A / 1946 | MMA third secondary unit | -P1-C9 | -P1-C9-T1
-P1-C9-T2 |