80MHz high-speed SPI interface Built-in hardware TCP/IP protocol stack Supports up to 8 socket connections Supports TCP, UDP, ICMP, IPv4, ARP, IGMP, PPPoE protocols Integrated data link layer and physical layer Supports power-down wake-up Supports high-speed serial peripheral interface (SPI modes 0–3) Internal 32KB transceiver buffer Embedded 10Base-T/100Base-TX Ethernet Physical Layer (PHY) Supports auto-negotiation (10/100 Mbps, full/half duplex) IP fragmentation not supported 3.3V operating voltage; I/O pins tolerate 5V LED status indicators for duplex mode, network connection, speed, and activity Ultra-small package for embedded applications Includes C-language application routines Power supply: 3.3V external, current > 200mA Interface: 3.3V TTL-level SPI Color: Green Material: ABS Dimensions: 23 x 25 mm Package includes: 10 x W5500 Ethernet modules Note: Color appearance may vary slightly due to lighting and screen settings. Dimensional tolerance: ±1–3 mm.