From the auction:
Note:Before place the bid, please be sure to check the manual of your system to make sure the Video Card of your system supports TV (RCA/S-Video) output through VGA port. Not every Video card will work with this adaptor. Only certain Video cards which have TV Output function built into VGA port will work through this adaptor.
Have you verified your computer is equipped with such a (more or less exotic) VGA configuration?