ZyXEL ES-3148 Guida Utente
Chapter 3 Hardware Overview
ES-3148 User’s Guide
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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.
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.
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 Switch.
Table 3 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.
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.
10/100 Mbps Ethernet Port
LNK/ACT
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.
Dual Personality Interface
LNK/ACT
Green
Blinking
The system is transmitting/receiving to/from a 10 Mbps or a 1000
Mbps Ethernet network.
On
The link to a 10 Mbps or a 1000 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.