user11898: I recently purchased a Leonardo Eth and a 5v POE module in an attempt to have a POE micro-controller.  I installed the module in the holes closest to the Ethernet jack side of the board, but when I apply power, the green power light turns on every second or so, but never fully turns on.
What am I doing wrong? Did I install the module wrong? Is it the wrong module?

user33135: From the arduino.cc website.
"The optional PoE module is designed to extract power from a conventional twisted pair Category 5 Ethernet cable. PoE module features are as follows: IEEE802.3af compliant Input voltage range 36V to 57V Overload and short-circuit protection 12V Output High efficiency DC/DC converter: typ 85% @ 80% load 1500V isolation (input to output)"
It sounds like you need the 12V PoE module

11898: <p>I recently purchased a <a href="http://rads.stackoverflow.com/amzn/click/B013PUTJYO" rel="nofollow noreferrer">Leonardo Eth</a> and a <a href="http://rads.stackoverflow.com/amzn/click/B01AMBBJJW" rel="nofollow noreferrer">5v POE module</a> in an attempt to have a POE micro-controller.  I installed the module in the holes closest to the Ethernet jack side of the board, but when I apply power, the green power light turns on every second or so, but never fully turns on.</p>

<p>What am I doing wrong? Did I install the module wrong? Is it the wrong module?</p>
 33135: <p>From the arduino.cc website.</p>

<p>"The optional PoE module is designed to extract power from a conventional twisted pair Category 5 Ethernet cable. PoE module features are as follows: IEEE802.3af compliant Input voltage range 36V to 57V Overload and short-circuit protection 12V Output High efficiency DC/DC converter: typ 85% @ 80% load 1500V isolation (input to output)"</p>

<p>It sounds like you need the 12V PoE module</p>
