| Number | Item | Description |
|---|---|---|
| 1 | LINK LED | Green: Link status is normal. |
| 2 | ACT LED | Orange: Data is being transferred. |
| 3 | LAN 2 | LAN port used by the user. |
| 4 | LAN 1 | Maintenance LAN port used by service personnel. |
| 5 | LAN ALARM LED | Red: LAN blade can be removed. |
| 6 | Uninterruptible power supply (UPS) port | N/A |