This is a Ethernet / USB HUB HAT for various versions of the Raspberry Pi, including Raspberry Pi 3 Model B+/ B, 2 Model B,and the size of the board is designed to perfectly fit the Zero / Zero W / Zero WH. The Raspberry Pi hub HAT provides more USB capability to your Pi, plus a RJ45 Ethernet port, which is great when you need a stable wired Ethernet connection. 3x USB ports, compatible with USB2.0/1.1 1x RJ45 10/100M port, based on the RTL8152B Ethernet chip Onboard multi indicators, for monitoring the status of power, Ethernet, and each USB port