| Number | Item | Description |
|---|---|---|
| 1 | PORT |
Red: The cable needs maintenance. Blinking Red: Error state (not linked state). Blinking Amber/Green): Error state (linked state). Green: Normal state (linked state). Off: Link down state. |
| 2 | ALARM | On: An error has occurred. |
| 3 | POWER | On: The ISW is powered on. |