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DC Power Jack
Power is supplied throu
g
h an external DC power
adapter. Check the technical specification section for
information about the DC power input voltage.
Since the switch does not include a power switch,
plugging its power adapter into a power outlet will
immediately power it on.
5. PoE Rules
5.1 PoE Max
This function will help to protect the POE Switch and to stabilize the power
transmitting to the powered device (PD).
If the system power remain <= 7.5 watt, the POE MAX LED will light on and the
system will not provide power to the additional POE PD to protect the POE Switch itself
and to stabilize the power transmitting to the former POE PD plugged in the Switch.
For example, when there are POE PD were connected to the POE Switch and the total
power consumption spends 25 watt, at this time the system remain 5 watt for buffer
and the POE MAX LED will light up. Once there is another POE PD inserted, the system
will not provide power to the additional POE PD.
5.2 Priority
This function will help to protect the system when the system power was over loaded,
the system will disable PoE function of the lower priority PoE port to maintain the
power budget to the PoE port which is in high priority.
The total power resource of the system is 30 watt sharing to the 4 POE ports
(maximum power for per port is 15.4 watt), when the POE PD shared the power
resource for over 30 watt, the system will automatically arrange the priority of these
ports, the low port number will have the higher priority than the high port number,
Port 1 > Port 2 > Port 3 > Port 4.
For example: In this POE Switch, Port 2 is using power with 7 watt, Port 3 is using
power with 15.4 watt, these two ports are totally using 22.4 watt power, when there is
an additional POE PD inserted to Port 1 with 15.4 watt, that means the system power
resource was over current, then the priority function will activate, the priority will set
to the lowest port number then to highest port number, so Port 1 will have the 15.4