Keyestudio W5100 Ethernet Shield gives you an easy way to get your Arduino Online. It can turn your Arduino into a simple web server or use the Internet to read /write its digital and analog outputs/inputs. It is directly supported by Arduino official Ethernet Library. It also supports the read &write of mini SD card (TF card). The shield adopts stackable design. You can directly plug it to Arduino board. It’s also compatible with our other shields.
price : $12.00
Shop : http://www.keyestudio.com/keyestudio-w5100-ethernet-shield-for-arduino-uno-r3-mega-2560.html