on stock, available
Pololu USB-to-Serial Adapter
The Pololu USB-to-serial adapter is a tiny unit that makes it easy to connect a microcontroller project to a PC. You can connect the adapter directly to a microcontroller without an RS-232-to-TTL level converter. It is USB 2.0-compatible and will work with your existing programs that interface with a serial port.
Več o izdelku:http://www.pololu.com/catalog/product/791