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H3C Campus Switches PoE Technology White Paper
Varieties of IP-based endpoints such as IP phones, access points, portable device chargers, card readers, and Webcams have been developed and widely used nowadays driven by fast development of network technologies. For these devices to run on the network, you must connect network cables to transmit data and deploy power sourcing devices to supply power to them. These power sourcing devices and power cords will not only cause higher expenditure but also increase device deployment and maintenance complexity.
Power over Ethernet (PoE), also known as remote power supply, is a technology that delivers power to powered devices (PDs) over twisted pair cables. It minimizes the costs while ensuring secure network operation without changing the network cabling.
PoE++ technology, defined in the latest PoE standard 802.3bt, delivers a maximum power output of 90 W and is backward compatible with existing PoE standards, making it to fit various power needs.
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