What is Power Over Ethernet or POE

I had been wondering over this buzz word POE lately, all newer network devices are coming with this option built in. I did some reasearch to look this up and  thought it would be worthwhile to share this with you all.

Power Over Ethernet is a newer technology which allows network devices like Wireless Access Points, Routers or evn switches to run without being plugged into an electrical outlet.  The power for the device is actually drawn from the Ethernet cable (often a CAT5, CAT5E or CAT6 cable).