Microduino-ENC28J60 meets all of the IEEE 802.3 specifications. It has dedicated pins for LED link and network activity indication. Microduino-RJ45 is the common name for an 8P8C modular connector using 8 conductors. It is designed to serve as an Ethernet network interface for any controller equipped with SPI. The ENC28J60 is a stand-alone Ethernet controller with an industry standard Serial Peripheral Interface (SPI).
Microduino-ENC28J60 module is based on Microchip’s ENC28J60 stand-alone 10Base-T Ethernet controller. Microduino-ENC28J60 must be stacked with Microduino-RJ45 together to form a complete Ethernet module, individual module can not be used seperately.