10
Cisco Small Business 300 Series Managed Switch Administration Guide  101
 
Managing Power-over-Ethernet Devices
The Power over Ethernet (PoE) feature is only available on PoE-based devices. For 
a list of PoE-based devices, refer to the Switch Models section.
This chapter describes how to use the PoE feature.
It includes the following topics: 
• PoE on the Switch
• Configuring PoE Properties
• Configuring the PoE Power, Priority, and Class
PoE on the Switch
A PoE switch is PSE (Power Sourcing Equipment) that delivers electrical power to 
connected PD (Powered Devices) over existing copper cables without interfering 
with the network traffic, updating the physical network or modifying the network 
infrastructure. 
PoE Features
PoE provides the following features:
• Eliminates the need to run 110/220 V AC power to all devices on a wired 
LAN. 
• Removes the necessity for placing all network devices next to power 
sources.
• Eliminates the need to deploy double cabling systems in an enterprise 
significantly decreasing installation costs.