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最新获批准的IEEE802.3af规范定义了一种可通过以太网来同时提供直流电源及数据的方法。以大约13W的电源,许多设备都能通过它们的以太网连接来受电,无需再使用
The newly approved IEEE802.3af specification defines a way to provide both DC power and data over Ethernet. With about 13W of power, many devices are powered by their Ethernet connection, eliminating the need to use them