Features: 1.Perfectly Compatible: For Raspberry Pi for Zero 2W to 3B expansion board, for zero 2W main control CPU and for Raspberry Pi 3B are the same model, which can be perfectly compatible. 2.Unique Adapter Design: With a unique adapter design, it can be inserted directly and has a strong sense of unity. 3.Extension Ports: High Definition Multimedia Interface female port, onboard 4 way USB expansion port, compatible with USB 2.0/1.1 transmission. 4.GPIO Height: The GPIO height position perfectly inherits the GPIO height of 3B and for zero, so that customers who need to insert various GPIO expansion boards can insert them perfectly, and the height remains unchanged. 5.Easy Installation: Can be directly installed to for Raspberry Pi for Zero, for Zero W, for Zero WH, through jumper test, can be connected to other versions of for Raspberry Pi or general computer or for Android mobile phone through usb cable. specification:Item Type: Expansion Board Material: PCB Expansion Interface: USB2.0x4 High Definition Multimedia Interface Female Port Applicable Motherboard: for Raspberry Pi for Zero 2W PackageList:1 x Expansion Board 1 xCharging Cable