Serial adapter allows a serial device to be connected to a USB computer | Plug-and-play convenience:DB9 serial port is seen as a COM port by your computer, and is available for use by any program that accesses COM ports | No need for an external power adapter:draws power directly from your computer via the USB connection | DB9 serial port supports data transfer rates up to 230 Kbps:twice the speed of a standard built-in serial port | LED shows adapter status and data activity at a glance