Features: Adapter for Raspberry Pi Zero or 2W to Pi3B/3B+, an alternative solution for Raspberry Pi 3 Model B/B+. Based on Raspberry Pi Zero or 2W, use with Raspberry Pi Zero to recreate the original appearance of the Pi 3B/3B+. Note: Raspberry Pi Zero or 2W is not included. Easy to install, the PIZero can be easily connected via specially designed connectors. By adding the Raspberry Pi Zero with this adapter board, you can replace the Raspberry Pi 3 Model B/B+. It's a more cost-effective solution. Interfaces compatible with Raspberry Pi 3B to 3B+ boards. Built-in 4-channel USB port, Built-in RTL8152B Ethernet chip, supports 1 RJ45 Ethernet port, 10/100M adaptive. Note: The Ethernet port does not support PoE functionality. Compatible with Pi 3B series HATs: The GPIO header height is the same as 3B, making it easy to connect to 3B series HATs or development projects. Supports Raspberry Pi Zero and Raspberry Pi Zero 2W. Specifications: Size: approx. 8.5x5.6cm/3.35x2.2 inches For Raspberry Pi 3B to 3B+ boards Supports Raspberry Pi Zero and Raspberry Pi Zero 2W Built-in 4-channel USB port Chip: RTL8152B Ethernet chip Supports 1 RJ45 Ethernet port, 10/100M adaptive. Note: The Ethernet port does not support PoE functionality Note: The Ethernet port does not support PoE functionality. The main boards are not included. Due to lighting effects and shooting angles, there will be some tolerances in the product, please understand. Please allow 0-1cm error due to manual measurement. Package includes: 1 pc Raspberry Pi 3B to 3B+ expansion board