1. Support for Google Android ADK function, support for Android phones: G1, Nexus One, Nexus S, Motorola Droid X(Phones need to upgrade to for Android 2.3.4, tablets need to upgrade to for Android 3.1) 2. Provide the compiled APK installation package and ADK source file 3. Make for Arduino realize the USB HOST function, which can communicate with other USB devices and support the USB HUB function. Compatible with for Arduino hardware: for Arduino Uno 328 for Arduino Diecimila/Duemilanove 328 for Arduino Mega 2560 (recommended) for Arduino Mega 1280 Material: plastic colour: White Package Contents: 1 x Electronic Module Board 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.