External Backup Power Supply Connector; Power Connector; Leds; Table 3 Leds - ZyXEL Communications ZyXEL Dimension ES-3148 User Manual

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.

3.2.3 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.

3.3 LEDs

The following table describes the LEDs on the device.

Table 3 LEDs

LED
BPS
PWR
SYS
ALM
10/100 Mbps Ethernet Port
LNK/ACT
Dual Personality Interface
Chapter 3 Hardware Overview
COLOR STATUS DESCRIPTION
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.
Green On The system is turned on.
Off The system is off.
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.
Red On There is a hardware failure.
Off The system is functioning normally.
Green Blinking The system is transmitting/receiving to/from a 10 Mbps Ethernet
network.
On The link to a 10 Mbps Ethernet network is up.
Amber Blinking The system is transmitting/receiving to/from a 100 Mbps Ethernet
network.
On The link to a 100 Mbps Ethernet network is up.
Off The link to an Ethernet network is down or not connected.
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