What is PoE

When the S7700 that supports Power over Ethernet (PoE) is configured with the external power supply (a PoE power supply frame) and installed with boards that support the PoE power supply, the S7700 can supply 48 V DC power to the attached downstream Powered Device (PD), for example, an IP phone, a WLAN AP, and a network camera, through twisted pairs. In this manner, the attached PD can be supplied with power remotely.

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