TOP Mini W5100 LAN Ethernet Shield Network Module board for Arduino Best

Product Features The W5100 is a versatile, single-chip network interface chip that integrates a 10/100 Ethernet controller that integrates embedded systems with high levels of integration, stability, performance and low cost. Support hardware TCP / IP protocol stack, support for TCP, UDP, ICM, IGMP, IPv4, ARP, PPPoE. Up to four independent ports. Support for automatic polar transformation (DMI / MDIX) 3.3V power supply, IO compatible with 5V signal. So, double row 2x2.0mm pin 14, size: 5.2x3x1.5cm (length x width x height) product description W5100 operating system can be used without Internet connection.