Features: for RaspberryPiZero or 2W to Pi3B/3B+adapter, alternative solution forRaspberryPi3 model B/B+ BasedonRaspberryPiZero or 2W, use forRaspberryPiZero to reproduce original appearance of Pi 3B/3B+. Note: forRaspberryPiZero or 2W are not included. Easy to install, forPIZero can be easily connected through specially designed connectors. Adding forRaspberryPiZero using this adapter board can replace forRaspberryPi3 model B/B+. It's cheaper. Compatible interfaces withRaspberryPi3B to 3B+boards. On board 4-channel USB port, On board RTL8152B Ethernetchip, supporting 1 RJ45 Ethernetport, 10/100M adaptive. Note: The Ethernetport does not support PoEfunctionality. Compatible withPi 3B series HATs: The GPIO head height is the same as 3B, making it easy to connect to 3B series HATs or development projects. Supports forRaspberryPiZero and forRaspberryPiZero2W. Specifications: Size:approx 8.5x5.6cm/3.35x2.2inches forRaspberryPi3B to 3B+boards Supports forRaspberryPiZero and forRaspberryPiZero2W On board 4-channel USB port Chip: RTL8152B Ethernetchip, supporting 1 RJ45 Ethernetport, 10/100M adaptive. Note: The Ethernetport does not support PoEfunctionality Note: The Ethernetport does not support PoEfunctionality.The mainboards are not included. Due to the problems of lighting effects and shooting angles, there will be certain tolerances in the product, please understand. Please allow 0-1cm error due to the manual measurment. Package includes: 1PC forRaspberryPi3B to 3B+ Expansion Board