The Cisco EtherSwitch service modules are capable of providing both Cisco pre-standard and IEEE 802.3af Power over Ethernet (PoE) support when inserted in Cisco 2800 Series or 3800 Series Integrated Services Routers. 802.3af is the IEEE standard for delivering power to Ethernet ports. The Cisco EtherSwitch service modules offer many benefits in regards to PoE support and can be used to power devices such as access points, IP phones, and other powered devices. Cisco EtherSwitch service modules are the first network modules offered by Cisco that are capable of supporting 802.3af-compliant devices.