Power over Ethernet is a way to power your device through your cat5 cable and to finally get rid of that ugly wall wart. This talk will discuss how it works on a hardware level, without going into too much detail about electronics, keeping it intelligible for the lay man.
 About the speaker
Koenraad works as an Application Engineer for power over ethernet ICs. So he should know his stuff. Please test this statement by firing away your questions!