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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Silicon Laboratories achieves unparalleled integration with the Si3400 by leveraging high-voltage and mixed-signal design expertise to deliver a unique, feature-rich and versatile architecture that is fully compliant with IEEE 802.
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11n functionality while remaining compliant with the wattage limitations of industry-standard 802.
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This standard provides double the power compared to the 802.
The device is compatible with powered devices that comply with the IEEE 802.
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