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3.4.3 CPU button
To restart the switch, short press the CPU button.
3.4.4 DEFAULT button
To restore factory settings, press the DEFAULT button and hold it down for
about 15 seconds. The DEFAULT indicator should set ON at this point.
3.4.5 CPU indicator
During normal processor operation, the CPU indicator should blink in 2-second
intervals (1 second ON, 1 second OFF)
3.4.6 DEFAULT indicator
DEFAULT indicator is ON when the device has the factory settings (IP
192.168.0.1).
3.4.7 PoE indicators
The PoE A indicator is ON when power is supplied over data (pairs 1, 2 and 3,
6). The PoE B indicator is ON when power is supplied by free pairs (pairs 4, 5
and 7, 8).
3.4.8 LINK indicators
Blinking of LINK indicators shows that data are transmitted via the
corresponding port.
3.4.9 Power indicators
Power indicators show the presence of supply voltage on the switch boards.
3.4.10 Polarity mistake indicators
Polarity mistake indicators show wrong connection to the battery.
3.4.11 NORM indicator
The switch is powered from the power supply.
3.4.12 ALARM indicator
Power supply voltage is not applied to the switch due to increased or decreased
voltage.
3.5 Power supply unit
Power supply unit is a separate element of the switch located in the bottom right
part of the cabinet. This is a small removable metal part with a grounding pin,
