The USB Host Shield contains all of the digital logic and analog circuitry necessary to implement a full-speed USB peripheral/host controller with your Arduino. This means you could use your Arduino boards to interface with and control any USB slave device – thumb drives, digital cameras, bluetooth dongles, and much more!! ezUSB Host Shield is re-engineered from of USB shield available from Sparkfun electronics. ezUSB solves some minor heating problems and provides a whole range of on board sensors available to interface with MCU using Embedded4u ezUSB Host shield.