Thanks for emailing me the pic, Fred The card is a Saturn 128 clone. I have a number of them. None of them have jumpers at that location. If anyone wants to take a guess at the purpose of the jumpers, you can view a pic of it at http://www3.telus.net/waynes/apple2_128k.jpg A PDF of the manual and some images of the software are available at http://www3.telus.net/waynes/saturn_64_128k/ Wayne