This standard allows electric power to be sent along the same cables that carry
Ethernet data. PoE-enabled switches and controllers can now deliver power over
standard Category 5e or 6 Ethernet cabling to remote PoE-enabled devices such
as IP phones, WLAN access points, security systems, and RFID scanners. PoE
simplifies the deployment of literally any IP-based device, particularly in areas
where it may be difficult or expensive to run separate power cabling.