External Backup Power Supply Connector; Front Panel Leds; Table 2 Front Panel Leds - ZyXEL Communications GS-4024 User Manual

3.2.2 External Backup Power Supply Connector

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 LEDs are located on the front panel. The following table describes the LEDs on the front
panel.

Table 2 Front Panel LEDs

LED
BPS
PWR
SYS
ALM
Gigabit Ethernet Ports
LNK/ACT
FDX
Mini-GBIC Slots
LNK
ACT
MGMT Port
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 10/1000 Mbps
Ethernet network.
On The link to a 10/1000 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.
Amber On The Ethernet port is negotiating in full-duplex mode.
Off The Ethernet port is negotiating in half-duplex mode and no
collisions are occurring.
Green On The port has a successful connection.
Off No Ethernet device is connected to this port.
Green Blinking The port is sending or receiving data.
Off The port is not sending or receiving data.
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