The Arduino USB Host Shield allows you to connect a USB device to your Arduino board. 

Specifications:

• Compatibility: Works with Arduino UNO, Mega, and Leonardo. It can also be used with other Arduino-compatible boards such as the Pro Mini and Micro using a breadboard.
• Voltage: Operates at either 3.3V or 5V (depending on VIN).
• Android ADK Support: Compatible with Google Android ADK, allowing you to connect your Arduino to devices like the G1, Nexus One, Nexus S, Motorola Droid X, and more

 

Feel free to explore various USB peripherals and create exciting projects with this shield!