Support Android ADK function, support Android phones: G1, One, S, Droid X (Mobile phone system needs to be upgraded to Android 2.3.4, Tablet PC needs to be upgraded to Android 3.1). Provide apk installation package and adk source files Material: PCB Color as shown Compatible with the following Aduino hardware. Aduino 328 Aduino Diecimila/Duemilanove 328 Aduino 2560 (recommended) Aduino 1280 Let Aduino implement USB HOST function, can communicate with other USB devices, and support USB HUB function. Debug demokit when the phone to open USB debugging This is a USB Host expansion board need to be used with main control board to use Support , and most Ardu host boards The shield board currently supports the following device categories. HID devices, such as keyboard, mouse, joystick, etc. USB to serial converters - , PL-2303, , and some cell phones and GPS receivers Android phones and watches with ADK capability Digital cameras - for , , DSLRs and P&S, as well as in general Support for additional devices is currently under development. Package Contents: 1 x MAX3421 Development Board Module Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.