PoE injector and PoE switch are power supply equipment, although PoE switch use more, but sometimes also must use the PoE power supply.
Outdoor PoE switch is generally the end of the cross connection power supply, PoE injector is the middle of the cross connection power supply.
The outdoor PoE injector can only supply power to the equipment through the network cable without the function of transmitting data. The PoE switch can transfer equipment and power supply.
Two kinds of power supply equipment extend the way of power supply of Ethernet power supply network equipment, so that network administrators can maximize the management of the network terminal equipment.
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