Add a USB drive or thumbdrive to your microcontroller!
Have all of the digital logic and analog circuitry necessary to implement a full-speed USB peripheral/host controller with your Arduino. Use it to interface and control any USB slave device - thumbdrives, digital cameras, bluetooth dongles, game controllers, Android phones and more!
Using the FT232RL, the Arduino Serial USB Board shows up as a com port allowing serial communication to and from the Arduino Stamp or any other serial device.
It is the most easy and reliable way to connect the Xbee module to a PC via USB port.
The Synapse SNAPstick is designed to be a compact and easy way to connect a PC to a SNAP wireless network via your PC USB port.
Handy device to run your USB equipment electrically separated from your PC. It removes a real potential problem when using USB-based test equipment!