ZyXEL Communications GS-2724 - Manual (Page 44)

Chapter 3 Hardware Overview
GS-2724 User’s Guide
44
3.2 Rear Panel
The following figures show the rear panels of the AC and DC models. The rear panel contains
a connector for backup power supply (BPS) and the power receptacle. For the DC model, it
also contains the power switch.
Figure 13 Rear Panel: AC Model
Figure 14 Rear Panel: DC Model
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 AC model, 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 a 100~240V
AC, 1.5A power outlet. Make sure that no objects obstruct the airflow of the fans.
The DC model requires DC power supply input of -48 VDC to -60 VDC, 1.6A max, no
tolerance. To connect the power to the DC model, insert one end of the supplied power cord to
the power receptacle on the rear panel and the other end to a power outlet. Make sure that no
objects obstruct the airflow of the fans.
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 LEDs
The following table describes the LEDs.
Table 2 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.