Brilldea

Prop Plug

The Prop Plug is the device you need to program the Parallax Propeller microcontroller. More specifically, you can use the Prop Plug to program and debug the code for your Prop Blade. The Prop Plug is a USB to serial TTL device. The Prop Plug is powered by the USB port, but does not provide power to your circuits.

This is what the Parallax site has to say about the Prop Plug:

The Prop Plug provides a USB-to-serial port connection that is convenient for microcontroller programming and communication. This tiny device is capable of asynchronous communication at up to 3 M baud with both 3.3-volt and 5.0-volt devices such as the Propeller and BASIC Stamp. The Prop Plug slips onto a 4-pin, 0.1" spaced header, allowing both PCB's and breadboards to provide in-circuit programming capability. Note: USB A to Mini B Retractable Cable is included.