Microsemi recently published a white paper: Using Power over Ethernet to Reduce Network Energy Consumption. As you can tell from the title of the technical paper, the article is about how companies can reduce costs by using energy-efficient Power over Ethernet (PoE) midspan technology. These systems implement four-pair powering and built-in power-management capabilities while minimizing idle power consumption through the use of smaller internal power supplies.
ADI Engineering is offering a new quarterly technical webinar series for embedded systems device developers. The first webinar will present a hardware teardown of the new 802.3at PoE+ standard. It will take March 2nd. ADI Engineering will give away a Apple iPad at the webinar (must be present to win).