Homemade router with PoE (Power over LAN)

If you need to power the camera, access point or Wi-Fi phone, technology PoE (Power over Ethernet) can be very useful. For this you will need a Category 5 cable and a device with support for PoE, which is more expensive than usual. The latter fact, and made ​​one of the enthusiasts to modify the access point and give it the missing property.