The IEEE is offering its 802.3at Power over Ethernet Plus standard as a free download to interested users. The terms of use are the same as those we described for the 802.11n Wireless LAN standard. Specifically, the IEEE maintains the copyright to the document in all forms and it limits users to downloading one copy for personal use and one additional copy as a personal archive. Reprinting the document requires written permission.
Approved on September 11 and published on October 30, 2009 the IEEE 802.3at specifications extend the power-delivery capabilities of PoE to 30 watts of safe power over a single Ethernet cable.
Review the IEEE terms of use and download the 802.3at specifications here.