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Power of Ethernet Direct PoE Product Line Overview - page 5 / 20

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What is PoE – What is PSE

PSE – Power Sourcing Equipment

The PSE is the equipment that provides power to PDs. The PSE’s main functions are:

To search the link section for a PD.

Optionally classify the PD.

Supply power to the link section. (only if a PD is detected)

Monitor the power on the link section.

802.3af defines two types of power source equipment: Endpoint and Mid-span.

Endpoint refers to an Ethernet switch with embedded Power over Ethernet technology.

Midspan devices are usually placed between legacy switches and the powered devices.

With PoE injector built-in, ED’s PoE switch products

are perfect solution for Endpoint applications.

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