| Interface | UCS – Managed | Un-Managed |
|---|---|---|
| RS-232 | 2340, 2370 | 2240, 2270 |
| RS-423 | 2340,2370 | 2240 |
| RS-422: RS-440/RS-530 |
2340,2370 | 2240,2270 |
| RS-422: TwinAx |
2340,2370 | 2240,2270 |
| Mil 188-144: TwinAx |
2340,2370 | 2240,2370 |
| Mil 188-144:DB-37 | 2240,2270 | |
| V.35 | 2340,2370 | 2240,2270 |
| TTL (coax) | 2340,2370 | 2240,2270 |
