80MHz high-speed SPI interface Built-in hardware TCP/IP protocol stack, requiring almost no knowledge of complex network protocols from the user Supports up to 8 socket connections Supports TCP, UDP, ICMP, IPv4, ARP, IGMP, and PPPoE protocols Integrates data link layer and physical layer Supports power-down wake-up Supports high-speed serial peripheral interface (SPI mode 0~3) Internal 32KB transmit/receive buffer Embedded 10BaseT/100BaseTX Ethernet physical layer (PHY) Supports auto-negotiation (10/100-Based full-duplex/half-duplex) Does not support IP fragmentation 3.3V operating voltage, 5V withstand voltage for I/O signals LED status display (full-duplex/half-duplex, network connection, network speed, activity status) Ultra-small pin-type package, convenient for embedded applications Product Features: Power supply: 3.3V external power supply, current should be greater than 200mA Control interface: 3.3V TTL level, SPI interface; 2*single row pins Color: Blue Material: PCB+Metal Package Contents: 5 * W5500 Ethernet network module Only the above package content, other products are not included. Note: Light reflection 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.