However, these digits are not sufficient to install Prism on a new computer, or to order an upgrade via self-service. The About dialog will appear, and will show part of the serial number like this: GPS-1123456-#-# The digits shown are enough for us to uniquely identify your serial number (when you request support). Drop the 'Help' menu (Windows) or the 'Prism' menu (Macintosh OS X).If GraphPad Prism is installed and has been run at least once on your computer, it is easy to find the main part of your serial number. We ask that you include your serial number when you request technical or upgrade support. When you run Prism for the first time on a computer, you'll need to enter the full serial number, which you receive when you purchase Prism. Prism serial numbers look vaguely like this: GPS-1123456-ABCD-1234
