The Arduino USB Host Shield allows you to connect a USB device to your Arduino board. The Arduino USB Host Shield is based on the MAX3421E (datasheet), which is a USB peripheral/host controller containing the digital logic and analog circuitry necessary to implement a full-speed USB peripheral or a full-/low-speed host compliant to USB specification rev 2.0. The shield is TinkerKit compatible, which means you can quickly create projects by plugging TinkerKit modules onto the board.
The following device classes are supported by the shield:
HID devices: keyboards, mice, joysticks, etc.
Game controllers: Sony PS3, Nintendo Wii, Xbox360.
USB to serial converters: FTDI, PL-2303, ACM, as well as certain cell phones and GPS receivers.
ADK-capable Android phones and tables.
Digital cameras: Canon EOS, Powershot, Nikon DSLRs and P&S, as well as generic PTP.
Mass storage devices: USB sticks, memory card readers, external hard drives, etc.
-For information on using the board with the Android OS, you may refer to the documentation about Mega2560 ADK.
Operating Voltage 5V
USB Controller MAX3421E
Max Current 500mA when Arduino is powered by a suitable power supply connected to the Arduino power jack
Max Current 400mA when Arduino is powered by its USB port