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 |
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BPS | Green | Blinking | The system is receiving power from the backup power supply. |
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| On | The backup power supply is connected and active. |
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| Off | The backup power supply is not ready or not active. |
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| Amber | Blinking | The system cannot get power from the backup power supply. |
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PWR | Green | On | The system is turned on. |
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| Off | The system is off. |
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SYS | Green | Blinking | The system is rebooting and performing |
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| On | The system is on and functioning properly. |
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| Off | The power is off or the system is not ready/malfunctioning. |
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ALM | Red | On | There is a hardware failure. |
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| Off | The system is functioning normally. |
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Chapter 3 Hardware Overview | 49 |