Look no further. Great product quality， that's solidly built. Best of all， its very affordable price. Buy today. <br />Arduino Ethernet expansion board allows Arduino controller connected to the network. It is a built- WizNet W5100 TCP / IP microprocessor expansion board. This board connects to the arduino board by a long row of pin female (wire-wrap header). By the Ethernet library Arduino IDE program， this board can easily connected to the network. It supports simultaneous four socket connections. <br /><br />And R3 version of this expansion board also added 1.0 Standard Edition output port by the four additional ports consisting of: two located on the edge of ARFF， two located on the edge of RESET. As regards the two ports of RESET edge， one is IOREF， which makes the expansion board to adapt the motherboard， another empty port reserved for possible future expansion. The latest version of this board is added micro-SD card slot， featuring network storage. In addition， it is also fully compatible with the Arduino Duemilanove， Mega series. It also has a separate PoE (power-over-Ethernet) module. The module can be soldered to the motherboard， thus transmitting electricity through the twisted pair. This complies with IEEE802.3af standard and is compatible with the existing PoE module. <br /><br />Technical Specifications: <br />1. Compatible with Arduino Mega2560/Uno rev3 standard output port. <br />2. With active voltage converter features micro-SD card connector. <br />3. Compatible with Arduino MEGA board.<br /><br />1 x Ethernet Network Board<br /><img src="http://img6.eachbuyer.com/x9/p100/eb3833_1.jpg" />                                                        <img src="http://img6.eachbuyer.com/x9/p100/eb3833_2.jpg" />                                                        <img src="http://img6.eachbuyer.com/x9/p100/eb3833_3.jpg" />                                                        <img src="http://img6.eachbuyer.com/x9/p100/eb3833_4.jpg" />                                                        <img src="http://img6.eachbuyer.com/x9/p100/eb3833_5.jpg" />                                                        <img src="http://img6.eachbuyer.com/x9/p100/eb3833_6.jpg" />