Features: The W5500 Ethernet Module integrates full TCPs protocols stack, enabling seamless networking connectivity for embedded systems with minimal development effort. Featuring SPI interfaces, this module offer plug and play compatibility with popular microcontrollers for IoTs applications. for embedded systems developers, iots engineers, and makers seeking Ethernet solution for industrial automation or smart device prototyping. for industrial controls systems, smart home hubs, and remote monitoring setups requiring 10/100Mbps adaptive speeds and multi protocols support (UDP). Builts with energy efficient PCB architecture and pre loaded code libraries, this WIZ820IO compatible module streamlines networking integration while maintaining low power consumption. Specifications: Materials: PCB+Metal Size: 25.5x23.4mm Quantity:3Pcs, 5Pcs(optional) Package Includes: 3/5Pcs Ethernet Module note: Please allow 0-1cm error due to manual measurement. make sure you not mind before bid. Due to the differences between different monitors, the Pictures may not reflect the actual of the item.