This license is ideal when the license needs to be shared between different people on different networks, or if there is a lot of traveling involved. The license is mailed to you on a USB drive. As long as that drive is attached to the computer, Understand will work. The license dongle can be shared between users as needed and will work on Windows, Mac and Linux.
Dongle licenses expire after two years and will need to be replaced. There is an additional minimal fee for new and replacement dongle licenses to offset the setup and shipping costs.
Some Linux systems do require some additional configuration to set dongle permissions. Read the below text file for details.