This works with all Parallax products. Plug into USB port and then point the operating system to appropriate driver. Then add driver port to your BASIC Stamp Module and you are ready to program with a virtual COM port.
WARNING: This product can expose you to chemicals including DEHP which is known to the State of California to cause cancer and to cause birth defects or other reproductive harm. For more information go to: www.P65Warnings.ca.gov