Connecting Poe (Power Over Ethernet) - D-Link AirPremier DAP-2553 Quick Installation Manual

Connecting PoE (Power
over Ethernet)
Connect one end of an Ethernet cable (included with your package) to the
LAN port on the DAP-2553 and the other end of the Ethernet cable to your
computer or to your PoE switch. The AP can be powered on by a PoE switch
or by the power adapter shipped with the AP.
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D-Link DCS-2553 Quick Install Guide