1. High speed SPI interface 80MHz. Hardware-TCPIP-protocol stack user built in, almost without understanding the complex network protocol knowledge. Supports up to 8 Socket2. Support TCP, UDP, ICMP, IPv4, , IGMP, PPPoE protocol. Integration of the data link layer, physical layer. Support the wakeup3. Support high speed serial peripheral interface (SPI model 0, 3). Internal 32K bytes receive buffer. The embedded 10BaseT/100BaseTX Ethernet physical layer (PHY)4. 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 signal5. 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 supply mode:3.3V external supply, current should be more than 200mAControl interface:The TTL level, 3.3V SPI interfacePCB size:23 x 25 mmMechanical Dimensions:28.5 x 23 x 24mmCondition: NewModel Number: USR-ES1 W5500color:As shownMaterial:PC+MetalPackage Contents:1 x W5500-USB moduleOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.