How Many PoE devices plugged in to your PoE switch? take note that not all switch is capable to enable all PoE ports at the same time. Try to plug 1 PoE devices at a time just to make sure it's not AP problem. Next, what is the color of the power led when you plugged in to your poe switch? Last thing you do is FACTORY reset, use a paper clip and press hold the reset button for approximately 10-15 sec.