Editing Power over Ethernet (section)

==Power management features and integration==
[[File:5520-24-POE.JPG|thumb|right|300px|[[Avaya ERS 5500]] switch with 48 Power over Ethernet ports]]
Advocates of PoE expect PoE to become a global long-term DC power cabling standard and replace a multiplicity of individual [[AC adapter]]s, which cannot be easily centrally managed.<ref>{{citation |title=Banish Those "Wall Warts" With Power Over Ethernet |author=Dave Dwelley |work=Electronic Design |url=http://www.electronicdesign.com/displays/banish-those-wall-warts-power-over-ethernet |date=Oct 26, 2003 |access-date=2018-07-21 |archive-date=2017-11-26 |archive-url=https://web.archive.org/web/20171126003421/http://www.electronicdesign.com/displays/banish-those-wall-warts-power-over-ethernet |url-status=live }}</ref> Critics of this approach argue that PoE is inherently less efficient than AC power due to the lower voltage, and this is made worse by the thin conductors of Ethernet. Advocates of PoE, like the [[Ethernet Alliance]], point out that quoted losses are for worst-case scenarios in terms of cable quality, length and power consumption by powered devices.<ref>{{citation |url=https://www.cablinginstall.com/articles/2017/110/power-over-ethernet-cable-losses-ethernet-alliance.html |author1=David Tremblay |author2=Lennart Yseboodt |title=Clarifying misperceptions about Power over Ethernet and cable losses |date=November 10, 2017 |access-date=2018-07-21 |work=Cabling Installation and Maintenance |archive-date=2018-07-22 |archive-url=https://web.archive.org/web/20180722011438/https://www.cablinginstall.com/articles/2017/110/power-over-ethernet-cable-losses-ethernet-alliance.html |url-status=live }}</ref> In any case, where the central PoE supply replaces several dedicated AC circuits, transformers and inverters, the power loss in cabling can be justifiable.

===Integrating EEE and PoE===
The integration of PoE with the IEEE 802.3az [[Energy-Efficient Ethernet]] (EEE) standard potentially produces additional energy savings. Pre-standard integrations of EEE and PoE (such as [[Marvell Technology Group|Marvell]]'s '''EEPoE''' outlined in a May 2011 white paper) claim to achieve a savings upwards of 3&nbsp;W per link. This saving is especially significant as higher-power devices come online.<ref name="marvell1">{{citation |url=http://www.marvell.com/switching/assets/Marvell-PoE-An-Energy-Efficient-Alternative.pdf |title=Power over Ethernet (PoE): An Energy-Efficient Alternative |date=May 2011 |author1=Roman Kleinerman |author2=Daniel Feldman |publisher=Marvell |access-date=2016-08-31 |archive-date=2016-04-16 |archive-url=https://web.archive.org/web/20160416004558/http://www.marvell.com/switching/assets/Marvell-PoE-An-Energy-Efficient-Alternative.pdf |url-status=live }}</ref>