Cisco has been supporting the standardized 802.3af power over ethernet feature since 2004. Catalyst switches with PoE are available as 10/100 PoE or even 10/100/1000 PoE. The Power over Ethernet feature is an excellent option for deployments of Cisco IP Phones. Wireless access points and security cameras can also be powered by PoE switches. The specific technology uses the Cat5/Cat6 ethernet cable to deliver power in addition to data, thus removing the need of using power adaptors for devices.
The following Cisco Models support PoE: