The latest revision of the shield adds a micro-SD card slot, which can be used to store files for
serving over the network. It is compatible with the Arduino Duemilanove and Mega (using the
Ethernet library). It also adds a separate power-over-Ethernet (PoE) module can be soldered to
the board to provide power from a conventional twisted pair Category 5 Ethernet cable. It is
IEEE802.3af compliant, and works with all compliant PoE injectors currently available.