ES-3124 User’s Guide

Figure 14 Rear Panel

3.2.1 Power Connector

Make sure you are using the correct power source as shown on the panel.

To connect the power to the switch, insert the female end of power cord to the power receptacle on the rear panel. Connect the other end of the supplied power cord to the power source. Make sure that no objects obstruct the airflow of the fans.

3.2.2 External Backup Power Supply Connector

The switch supports external backup power supply (BPS).

The backup power supply constantly monitors the status of the internal power supply. The backup power supply automatically provides power to the switch in the event of a power failure. Once the switch receives power from the backup power supply, it will not automatically switch back to using the internal power supply even when the power is resumed.

3.3 Front Panel LEDs

The following table describes the LEDs on the front panel.

Table 2 Front Panel LEDs

LED

COLOR

STATUS

DESCRIPTION

 

 

 

 

BPS

Green

Blinking

The system is receiving power from the backup power supply.

 

 

 

 

 

 

On

The backup power supply is connected and active.

 

 

 

 

 

 

Off

The backup power supply is not ready or not active.

 

 

 

 

 

Amber

Blinking

The system cannot get power from the backup power supply.

 

 

 

 

PWR

Green

On

The system is turned on.

 

 

 

 

 

 

Off

The system is off.

 

 

 

 

SYS

Green

Blinking

The system is rebooting and performing self-diagnostic tests.

 

 

 

 

 

 

On

The system is on and functioning properly.

 

 

 

 

 

 

Off

The power is off or the system is not ready/malfunctioning.

 

 

 

 

ALM

Red

On

There is a hardware failure.

 

 

 

 

 

 

Off

The system is functioning normally.

 

 

 

 

Chapter 3 Hardware Overview

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