Arduino is an open-source physical computing platform based on a simple i/o board and a user friendly development environment that implements the Processing/Wiring language.

Arduino can be used to develop stand-alone interactive objects or can be connected to software on your computer (e.g. Flash, Processing, MaxMSP, PD).

Arduino Ethernet is a PoE-ready Network Module

The included PoE Module must be soldered to the board, in order to power up the device via PoE.

Board can be programmed with the included serial converter.

Board comes fully assembled and tested.

Wikipedia: Arduino-Plattform

Arduino Ethernet Details

Arduino Homepage