Editing Power over Ethernet (section)

===Powered device===
802.3 refers to any PoE-powered piece of equipment as a ''Powered Device'' (PD). Examples include [[wireless access point]]s, [[VoIP phone]]s, and [[IP camera]]s.

Many powered devices have an auxiliary power connector for an optional external power supply. Depending on the design, some, none, or all of the device's power can be supplied from the auxiliary port,<ref name="802.3-2008, 33.3.5 PD Power">IEEE 802.3-2008, section 2, clause 33.3.5</ref><ref name="802.3at-2009, 33.3.7 PD Power">IEEE 802.3at-2009, clause 33.3.7</ref> with the auxiliary port also sometimes providing backup power in case PoE-supplied power fails.