Power over Ethernet
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 Given a single ethernet cable, a PoE splitter provides both data (gray cable) and power (black cable) for a wireless LAN access point, thus eliminating the need for a nearby power outlet. |
Power over Ethernet or PoE technology describes a system to pass electrical power safely, along with data, on Ethernet cabling. The IEEE standard for PoE requires category 5 cable or higher for high power levels, but can operate with category 3 cable if less power is required. Power is supplied in common mode over two or more of the differential pairs of wires found in the Ethernet cables and comes from a power supply within a PoE-enabled networking device such as an Ethernet switch or can be injected into a cable run with a midspan power supply.
- See also: Wikipedia
- Related: Network switch, Power line communication, Switched-mode power supply, ITU-T, Phantom power, HomePlug Powerline Alliance
| ieee802.org: Download the IEEE 802.3 standards ieee802.org: Download the IEEE 802.3 standards standards.ieee.org/getieee802/802.3.html - Web |
| ieee802.org: IEEE 802.3af Task Force ieee802.org: IEEE 802.3af Task Force www.ieee802.org/3/af/ - Web |
| ieee802.org: IEEE 802.3at Task Force ieee802.org: IEEE 802.3at Task Force www.ieee802.org/3/at/ - Web |
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