Specially designed for Raspberry Pi Zero, onboard 3-way USB expansion port, compatible with USB 2.0 / 1.1 transmission, suitable for Raspberry Pi Zero series ^^ Built-in expansion board (ETH/USB HUB HAT (B) ) with pogo pin design, suitable for Raspberry Pi Zero/Zero W/Zero WH direct connection ^^ Onboard RTL8152B Ethernet chip, support 1xRJ45 network port, 10/100M auto-adaptive ^^ Made of high-quality ABS material, the matte texture is fine and does not leave fingerprints ^^ Buckle card slot design, easy to install. Comes with two styles of top covers, which can be switched at any time