This option is for SMART Practice Aids only. It's available for those who can't do a Local Machine or Administrative install for SMART. This will only download the products. You'll need to manually run the installation file the PPC Installer downloads so you can install or update your SMART products.
When you're on the Finished screen in the last step of the installation, you'll have access codes for what you downloaded. You'll want to print, take a screenshot, or write them down so you can install SMART.