Features: Brand new and high quality High speed SPI interface 80MHz. Hardware-TCPIP-protocol stack user built in, almost without understanding the complex network protocol knowledge. Supports up to 8 Socket. Support TCP, UDP, ICMP, IPv4, ARP, IGMP, PPPoE protocol. Integration of the data link layer, physical layer. Support the wakeup. Support high speed serial peripheral interface (SPI model 0, 3). Internal 32K bytes receive buffer. The embedded 10BaseT/100BaseTX Ethernet physical layer (PHY). Support auto negotiation (10/100-Based full duplex or half duplex) Does not support the IP patch. The working voltage of 3.3V, I/O and 5V voltage signal. LED display (full duplex or half duplex, network connection, network speed,active). Pin type package ultra small, convenient for embedded applications. Application of C sample project. Specifications: Control interface:The TTL level, 3.3V SPI interface Length: 25.5mm Package Includes: 1 x SPI to LAN/ Ethernet Converter TCP/IP Mod note: Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!