802.3af

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802.3af

An IEEE standard for powering network devices via Ethernet cable. Also known as "Power-over-Ethernet," it provides 48 volts over 4-wire or 8-wire twisted pair. The 8-wire cable uses one twisted pair for the power, while the 4-wire transmits the power over the same pair as the data, but uses different frequencies. Designed with IP phones and wireless access points in mind, it allows devices such as these to be placed in locations that have no electrical outlets. Only the Ethernet cable needs to be connected to the device. See inline power.
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The RuggedCom PoE products are compliant with IEEE 802.
4 watts of power per port, ADC's midspan controllers support a broad variety of Power-Over-Ethernet enabled devices by detecting device presence and transmitting appropriate power according to IEEE 802.
Like ADC's higher port-count solutions, the four-port platform supports a broad variety of Power-Over-Ethernet enabled devices by detecting device presence and transmitting appropriate power according to IEEE 802.