support the Google for Android ADK, supporting for Android phone: G1, for Nexus One, for Nexus S, for Droid X(Mobile systems need to upgrade to for Android 2.3.4, tablet PCs need to upgrade to for Android 3.1) provides APK package, and compiled source files ADK Compatible with for Arduino following hardware:for Uno 328 for Diecimila / Duemilanove 328 for Mega 2560 (recommended) for Mega 1280 to achieve the For Arduino USB HOST function, you can communicate with other USB devices,and support USB HUB function Colour:Photo Color Material:PCB Package Contents: 1 x USB Host Shield Blue 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.