Overview Connect your Arduino design to the internet-of-things with this handy W5500 ethernet development board with atmega328p on board. Fully compatible with UNO with integrated USB download & micro SD card slot. Features In-built W5500 ethernet controller for instant IoT connection for your Arduino design Uses standard libraries On-board MicroSD card slot atmega328p UNO compatible microcontroller Standard pin outs and fully shield compatible Works with standard Arduino libraries and an updated IDE. Specifications Main Chip ATMEGA328 microcontroller USB power supply 5v External power 7-12v (9v recommended) Digital input/output pins: 14?of which 6 pins support PWM Analog input pin: 6 Built-in flash memory 32K SRAM: 2k EEPROM:1K Clock frequency 16MH Features: TCP/IP Ethernet controller W5500, MicroSD card mountTF card), MicroUSB